Engineering Papers⌕ Search

SEARCH · Engineering Papers

Results for “ClO3”

Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.

Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.

At least 19 records
All sourcesNASA NTRSDOE OSTI
NASA NTRS2016

Deposition, Accumulation, and Alteration of Cl(-), NO3(-), ClO4(-) and ClO3(-) Salts in a Hyper-Arid Polar Environment: Mass Balance and Isotopic Constraints

The salt fraction in permafrost soils/sediments of the McMurdo Dry Valleys (MDV) of Antarctica can be used as a proxy for cold desert geochemical processes and paleoclimate reconstruction. Previous analyses of the salt fraction in MDV permafrost soils have largely been conducted in coastal regions where permafrost soils are variably affected by aqueous processes and mixed inputs from marine and stratospheric sources. We expand upon this work by evaluating permafrost soil/sediments in University Valley, located in the ultraxerous zone where both liquid water transport and marine influences are minimal. We determined the abundances of Cl(-), NO3(-, ClO4(-)and ClO3(-)in dry and ice-cemented soil/sediments, snow and glacier ice, and also characterized Cl(-) and NO3(-) isotopically. The data are not consistent with salt deposition in a sublimation till, nor with nuclear weapon testing fall-out, and instead point to a dominantly stratospheric source and to varying degrees of post depositional transformation depending on the substrate, from minimal alteration in bare soils to significant alteration (photodegradation and/or volatilization) in snow and glacier ice. Ionic abundances in the dry permafrost layer indicate limited vertical transport under the current climate conditions, likely due to percolation of snowmelt. Subtle changes in ClO4(-)/NO3(-) ratios and NO3(-) isotopic composition with depth and location may reflect both transport related fractionation and depositional history. Low molar ratios of ClO3(-)/ClO4(-) in surface soils compared to deposition and other arid systems suggest significant post depositional loss of ClO3(-), possibly due to reduction by iron minerals, which may have important implications for oxy-chlorine species on Mars. Salt accumulation varies with distance along the valley and apparent accumulation times based on multiple methods range from approximately 10 to 30 kyr near the glacier to 70-200 kyr near the valley mouth. The relatively young age of the salts and relatively low and homogeneous anion concentrations in the ice-cemented sediments point to either a mechanism of recent salt removal, or to relatively modern permafrost soils (less than 1 million years). Together, our results show that near surface salts in University Valley serve as an end-member of stratospheric sources not subject to biological processes or extensive remobilization.

cold desert geochemical processes↗
DOE OSTI2020

Materials Data on ClO3 by Materials Project

ClO3 crystallizes in the monoclinic Cc space group. The structure is zero-dimensional and consists of four hypochlorous acid;hydrate molecules and four ClO4 clusters. In each ClO4 cluster, there are four inequivalent O sites. In the first O site, O is bonded in a single-bond geometry to one Cl atom. The O–Cl bond length is 1.45 Å. In the second O site, O is bonded in a single-bond geometry to one Cl atom. The O–Cl bond length is 1.49 Å. In the third O site, O is bonded in a single-bond geometry to one Cl atom. The O–Cl bond length is 1.48 Å. In the fourth O site, O is bonded in a single-bond geometry to one Cl atom. The O–Cl bond length is 1.44 Å. Cl is bonded in a tetrahedral geometry to four O atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ba(ClO3)2 by Materials Project

Ba(ClO3)2 crystallizes in the orthorhombic Fdd2 space group. The structure is three-dimensional. Ba is bonded in a 10-coordinate geometry to ten O atoms. There are a spread of Ba–O bond distances ranging from 2.82–3.15 Å. There are three inequivalent O sites. In the first O site, O is bonded in a bent 150 degrees geometry to one Ba and one Cl atom. The O–Cl bond length is 1.49 Å. In the second O site, O is bonded in a 1-coordinate geometry to two equivalent Ba and one Cl atom. The O–Cl bond length is 1.51 Å. In the third O site, O is bonded in a distorted trigonal planar geometry to two equivalent Ba and one Cl atom. The O–Cl bond length is 1.52 Å. Cl is bonded in a trigonal non-coplanar geometry to three O atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ca(ClO3)2 by Materials Project

Ca(ClO3)2 crystallizes in the orthorhombic Fdd2 space group. The structure is three-dimensional. Ca is bonded in a 8-coordinate geometry to eight O atoms. There are a spread of Ca–O bond distances ranging from 2.49–2.62 Å. There are three inequivalent O sites. In the first O site, O is bonded in a trigonal planar geometry to two equivalent Ca and one Cl atom. The O–Cl bond length is 1.53 Å. In the second O site, O is bonded in a bent 150 degrees geometry to one Ca and one Cl atom. The O–Cl bond length is 1.49 Å. In the third O site, O is bonded in a distorted bent 120 degrees geometry to one Ca and one Cl atom. The O–Cl bond length is 1.50 Å. Cl is bonded in a trigonal non-coplanar geometry to three O atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ca(ClO3)2 by Materials Project

Ca(ClO3)2 crystallizes in the monoclinic C2/c space group. The structure is three-dimensional. Ca is bonded in a 10-coordinate geometry to ten O atoms. There are a spread of Ca–O bond distances ranging from 2.57–2.83 Å. There are three inequivalent O sites. In the first O site, O is bonded in a distorted trigonal planar geometry to two equivalent Ca and one Cl atom. The O–Cl bond length is 1.52 Å. In the second O site, O is bonded in a bent 120 degrees geometry to one Ca and one Cl atom. The O–Cl bond length is 1.49 Å. In the third O site, O is bonded in a 3-coordinate geometry to two equivalent Ca and one Cl atom. The O–Cl bond length is 1.52 Å. Cl is bonded in a trigonal non-coplanar geometry to three O atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on ClO3 by Materials Project

ClO3 is alpha carbon monoxide-like structured and crystallizes in the monoclinic Cc space group. The structure is zero-dimensional and consists of four hydrogen peroxide molecules and four hypochlorous acid molecules.

36 MATERIALS SCIENCE↗
NASA NTRS1980

Asymmetrical ClO3 - Its possible formation from ClO and O2 and its possible reactions

An analysis of recent accurate experimental studies of Cl2-photosensitized O3 decomposition, in which O3 disappearance and OClO formation were directly monitored, suggests the possibility that the suppression of the quantum yield in the presence of O2 may be due to the formation of asymmetrical chlorine trioxide (ClO.O2). Other intermediaries, such as Cl2O2, which may also form in the system are not thought to explain the observations. In addition to its capacity to oxidize, which it shares with other peroxo compounds, asymmetrical ClO3 appears to undergo an interesting class of reactions in which the loosely bound O2 adduct is relatively easily displaced by reactive atoms and radicals such as chlorine.

Prasad, S. S.↗
DOE OSTI2020

Materials Data on SrH12(ClO3)2 by Materials Project

Sr(H2O)6Cl2 crystallizes in the trigonal P321 space group. The structure is one-dimensional and consists of two hydrochloric acid molecules and one Sr(H2O)6 ribbon oriented in the (0, 0, 1) direction. In the Sr(H2O)6 ribbon, Sr2+ is bonded in a 9-coordinate geometry to nine O2- atoms. There are three shorter (2.57 Å) and six longer (2.76 Å) Sr–O bond lengths. There are two inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.99 Å. In the second H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.99 Å. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded in a water-like geometry to two equivalent Sr2+ and two equivalent H1+ atoms. In the second O2- site, O2- is bonded in a water-like geometry to one Sr2+ and two equivalent H1+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on CaH12(ClO3)2 by Materials Project

Ca(H2O)6Cl2 crystallizes in the trigonal P321 space group. The structure is one-dimensional and consists of two hydrochloric acid molecules and one Ca(H2O)6 ribbon oriented in the (0, 0, 1) direction. In the Ca(H2O)6 ribbon, Ca2+ is bonded in a 9-coordinate geometry to nine O2- atoms. There are three shorter (2.46 Å) and six longer (2.63 Å) Ca–O bond lengths. There are two inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.99 Å. In the second H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.99 Å. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded in a water-like geometry to two equivalent Ca2+ and two equivalent H1+ atoms. In the second O2- site, O2- is bonded in a water-like geometry to one Ca2+ and two equivalent H1+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Sr(ClO3)2 by Materials Project

Sr(O3Cl)2 crystallizes in the orthorhombic Fdd2 space group. The structure is three-dimensional. Sr is bonded in a 8-coordinate geometry to eight O atoms. There are a spread of Sr–O bond distances ranging from 2.63–2.71 Å. There are three inequivalent O sites. In the first O site, O is bonded in a bent 150 degrees geometry to one Sr and one Cl atom. The O–Cl bond length is 1.49 Å. In the second O site, O is bonded in a 2-coordinate geometry to one Sr and one Cl atom. The O–Cl bond length is 1.51 Å. In the third O site, O is bonded in a trigonal planar geometry to two equivalent Sr and one Cl atom. The O–Cl bond length is 1.53 Å. Cl is bonded in a trigonal non-coplanar geometry to three O atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Pb(ClO3)2 by Materials Project

Pb(O3Cl)2 crystallizes in the orthorhombic Fdd2 space group. The structure is three-dimensional. Pb is bonded in a 8-coordinate geometry to eight O atoms. There are a spread of Pb–O bond distances ranging from 2.62–2.77 Å. There are three inequivalent O sites. In the first O site, O is bonded in a distorted single-bond geometry to one Pb and one Cl atom. The O–Cl bond length is 1.48 Å. In the second O site, O is bonded in a distorted bent 120 degrees geometry to one Pb and one Cl atom. The O–Cl bond length is 1.52 Å. In the third O site, O is bonded in a distorted single-bond geometry to two equivalent Pb and one Cl atom. The O–Cl bond length is 1.54 Å. Cl is bonded in a trigonal non-coplanar geometry to three O atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on BaCu2Te2(ClO3)2 by Materials Project

BaCu2Te2(O3Cl)2 crystallizes in the monoclinic P2_1 space group. The structure is three-dimensional. Ba2+ is bonded in a 8-coordinate geometry to six O2- and two equivalent Cl1- atoms. There are a spread of Ba–O bond distances ranging from 2.62–3.06 Å. There are one shorter (3.09 Å) and one longer (3.22 Å) Ba–Cl bond lengths. There are two inequivalent Cu2+ sites. In the first Cu2+ site, Cu2+ is bonded in a distorted rectangular see-saw-like geometry to four O2- atoms. There are a spread of Cu–O bond distances ranging from 1.95–2.02 Å. In the second Cu2+ site, Cu2+ is bonded in a 6-coordinate geometry to three O2- and three Cl1- atoms. There are a spread of Cu–O bond distances ranging from 1.96–2.02 Å. There are a spread of Cu–Cl bond distances ranging from 2.32–3.16 Å. There are two inequivalent Te4+ sites. In the first Te4+ site, Te4+ is bonded in a 3-coordinate geometry to three O2- atoms. There are a spread of Te–O bond distances ranging from 1.90–1.93 Å. In the second Te4+ site, Te4+ is bonded in a 4-coordinate geometry to four O2- atoms. There are a spread of Te–O bond distances ranging from 1.93–2.36 Å. There are six inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted trigonal planar geometry to one Ba2+, one Cu2+, and one Te4+ atom. In the second O2- site, O2- is bonded in a 2-coordinate geometry to one Ba2+, one Cu2+, and one Te4+ atom. In the third O2- site, O2- is bonded in a 3-coordinate geometry to one Cu2+ and two Te4+ atoms. In the fourth O2- site, O2- is bonded in a trigonal planar geometry to two Cu2+ and one Te4+ atom. In the fifth O2- site, O2- is bonded in a 4-coordinate geometry to two equivalent Ba2+, one Cu2+, and one Te4+ atom. In the sixth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to two equivalent Ba2+, one Cu2+, and one Te4+ atom. There are two inequivalent Cl1- sites. In the first Cl1- site, Cl1- is bonded in a distorted single-bond geometry to two equivalent Cu2+ atoms. In the second Cl1- site, Cl1- is bonded in a 3-coordinate geometry to two equivalent Ba2+ and one Cu2+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on LaH6(ClO3)3 by Materials Project

LaH6(O3Cl)3 crystallizes in the hexagonal P-62c space group. The structure is three-dimensional. La is bonded in a distorted q6 geometry to nine O atoms. There are three shorter (2.58 Å) and six longer (2.59 Å) La–O bond lengths. H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.99 Å. There are two inequivalent O sites. In the first O site, O is bonded in a water-like geometry to one La and two equivalent H atoms. In the second O site, O is bonded in a distorted bent 120 degrees geometry to one La and one Cl atom. The O–Cl bond length is 1.58 Å. Cl is bonded in a bent 120 degrees geometry to two equivalent O atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Te2Pb3(ClO3)2 by Materials Project

Pb3Te2(O3Cl)2 crystallizes in the monoclinic C2/m space group. The structure is three-dimensional. there are three inequivalent Pb2+ sites. In the first Pb2+ site, Pb2+ is bonded in a 9-coordinate geometry to eight O2- and one Cl1- atom. There are a spread of Pb–O bond distances ranging from 2.57–3.05 Å. The Pb–Cl bond length is 3.32 Å. In the second Pb2+ site, Pb2+ is bonded in a 4-coordinate geometry to four O2- and four Cl1- atoms. There are two shorter (2.46 Å) and two longer (2.61 Å) Pb–O bond lengths. There are a spread of Pb–Cl bond distances ranging from 3.23–3.30 Å. In the third Pb2+ site, Pb2+ is bonded in a 5-coordinate geometry to five O2- and three Cl1- atoms. There are a spread of Pb–O bond distances ranging from 2.44–2.70 Å. There are two shorter (3.32 Å) and one longer (3.33 Å) Pb–Cl bond lengths. There are two inequivalent Te4+ sites. In the first Te4+ site, Te4+ is bonded to four O2- atoms to form distorted edge-sharing TeO4 trigonal pyramids. There are two shorter (1.96 Å) and two longer (2.08 Å) Te–O bond lengths. In the second Te4+ site, Te4+ is bonded in a 3-coordinate geometry to three O2- and one Cl1- atom. There is one shorter (1.88 Å) and two longer (1.91 Å) Te–O bond length. The Te–Cl bond length is 3.31 Å. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a 2-coordinate geometry to two equivalent Pb2+ and two equivalent Te4+ atoms. In the second O2- site, O2- is bonded in a 1-coordinate geometry to three Pb2+ and one Te4+ atom. In the third O2- site, O2- is bonded in a 2-coordinate geometry to three Pb2+ and one Te4+ atom. In the fourth O2- site, O2- is bonded to three Pb2+ and one Te4+ atom to form distorted edge-sharing OTePb3 tetrahedra. There are two inequivalent Cl1- sites. In the first Cl1- site, Cl1- is bonded in a 5-coordinate geometry to four Pb2+ and one Te4+ atom. In the second Cl1- site, Cl1- is bonded in a 4-coordinate geometry to four Pb2+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on SrCu2Te2(ClO3)2 by Materials Project

SrCu2(TeO3)2Cl2 crystallizes in the monoclinic P2_1 space group. The structure is three-dimensional. Sr2+ is bonded in a 8-coordinate geometry to six O2- and two equivalent Cl1- atoms. There are a spread of Sr–O bond distances ranging from 2.48–2.88 Å. There are one shorter (2.96 Å) and one longer (3.05 Å) Sr–Cl bond lengths. There are two inequivalent Cu2+ sites. In the first Cu2+ site, Cu2+ is bonded in a 6-coordinate geometry to three O2- and three Cl1- atoms. There are a spread of Cu–O bond distances ranging from 1.96–2.01 Å. There are a spread of Cu–Cl bond distances ranging from 2.30–2.94 Å. In the second Cu2+ site, Cu2+ is bonded in a distorted rectangular see-saw-like geometry to four O2- atoms. There are a spread of Cu–O bond distances ranging from 1.95–2.00 Å. There are two inequivalent Te4+ sites. In the first Te4+ site, Te4+ is bonded in a 3-coordinate geometry to three O2- atoms. There are a spread of Te–O bond distances ranging from 1.90–1.92 Å. In the second Te4+ site, Te4+ is bonded in a 4-coordinate geometry to four O2- atoms. There are a spread of Te–O bond distances ranging from 1.93–2.36 Å. There are six inequivalent O2- sites. In the first O2- site, O2- is bonded in a 3-coordinate geometry to one Sr2+, one Cu2+, and one Te4+ atom. In the second O2- site, O2- is bonded in a 4-coordinate geometry to two equivalent Sr2+, one Cu2+, and one Te4+ atom. In the third O2- site, O2- is bonded in a trigonal planar geometry to two Cu2+ and one Te4+ atom. In the fourth O2- site, O2- is bonded in a 4-coordinate geometry to two equivalent Sr2+, one Cu2+, and one Te4+ atom. In the fifth O2- site, O2- is bonded in a 2-coordinate geometry to one Sr2+, one Cu2+, and one Te4+ atom. In the sixth O2- site, O2- is bonded in a 3-coordinate geometry to one Cu2+ and two Te4+ atoms. There are two inequivalent Cl1- sites. In the first Cl1- site, Cl1- is bonded in a 3-coordinate geometry to two equivalent Sr2+ and one Cu2+ atom. In the second Cl1- site, Cl1- is bonded in a distorted single-bond geometry to two equivalent Cu2+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Cu3Se2(ClO3)2 by Materials Project

Cu3(SeO3)2Cl2 crystallizes in the monoclinic C2/m space group. The structure is two-dimensional and consists of one Cu3(SeO3)2Cl2 sheet oriented in the (0, 0, 1) direction. there are two inequivalent Cu2+ sites. In the first Cu2+ site, Cu2+ is bonded to four O2- and one Cl1- atom to form distorted edge-sharing CuClO4 trigonal bipyramids. There are a spread of Cu–O bond distances ranging from 1.95–2.30 Å. The Cu–Cl bond length is 2.22 Å. In the second Cu2+ site, Cu2+ is bonded in a distorted square co-planar geometry to four equivalent O2- atoms. All Cu–O bond lengths are 1.94 Å. Se4+ is bonded in a distorted trigonal non-coplanar geometry to three O2- atoms. There is one shorter (1.69 Å) and two longer (1.80 Å) Se–O bond length. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted trigonal planar geometry to two Cu2+ and one Se4+ atom. In the second O2- site, O2- is bonded in a distorted trigonal planar geometry to two equivalent Cu2+ and one Se4+ atom. Cl1- is bonded in a single-bond geometry to one Cu2+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Cu3Se2(ClO3)2 by Materials Project

Cu3(SeO3)2Cl2 crystallizes in the triclinic P-1 space group. The structure is three-dimensional. there are three inequivalent Cu2+ sites. In the first Cu2+ site, Cu2+ is bonded to four O2- and one Cl1- atom to form distorted edge-sharing CuClO4 square pyramids. There are a spread of Cu–O bond distances ranging from 1.92–2.59 Å. The Cu–Cl bond length is 2.21 Å. In the second Cu2+ site, Cu2+ is bonded in a 6-coordinate geometry to five O2- and one Cl1- atom. There are a spread of Cu–O bond distances ranging from 1.94–2.50 Å. The Cu–Cl bond length is 2.87 Å. In the third Cu2+ site, Cu2+ is bonded in a 4-coordinate geometry to three O2- and two Cl1- atoms. There is one shorter (1.97 Å) and two longer (1.99 Å) Cu–O bond length. There are one shorter (2.26 Å) and one longer (2.88 Å) Cu–Cl bond lengths. There are two inequivalent Se4+ sites. In the first Se4+ site, Se4+ is bonded in a trigonal non-coplanar geometry to three O2- atoms. There are a spread of Se–O bond distances ranging from 1.74–1.77 Å. In the second Se4+ site, Se4+ is bonded in a distorted trigonal non-coplanar geometry to three O2- atoms. There are a spread of Se–O bond distances ranging from 1.73–1.79 Å. There are six inequivalent O2- sites. In the first O2- site, O2- is bonded in a 2-coordinate geometry to two equivalent Cu2+ and one Se4+ atom. In the second O2- site, O2- is bonded in a distorted trigonal planar geometry to two equivalent Cu2+ and one Se4+ atom. In the third O2- site, O2- is bonded in a 2-coordinate geometry to two equivalent Cu2+ and one Se4+ atom. In the fourth O2- site, O2- is bonded in a trigonal planar geometry to two Cu2+ and one Se4+ atom. In the fifth O2- site, O2- is bonded in a distorted trigonal planar geometry to two Cu2+ and one Se4+ atom. In the sixth O2- site, O2- is bonded in a distorted trigonal planar geometry to two Cu2+ and one Se4+ atom. There are two inequivalent Cl1- sites. In the first Cl1- site, Cl1- is bonded in a 1-coordinate geometry to two Cu2+ atoms. In the second Cl1- site, Cl1- is bonded in a distorted water-like geometry to two Cu2+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Cu4Te5(ClO3)4 by Materials Project

Cu4Te5O12Cl4 crystallizes in the tetragonal P4/n space group. The structure is three-dimensional. Cu2+ is bonded in a 5-coordinate geometry to four O2- and one Cl1- atom. There are a spread of Cu–O bond distances ranging from 1.95–2.61 Å. The Cu–Cl bond length is 2.25 Å. There are two inequivalent Te4+ sites. In the first Te4+ site, Te4+ is bonded in a 4-coordinate geometry to three O2- atoms. There are a spread of Te–O bond distances ranging from 1.90–1.97 Å. In the second Te4+ site, Te4+ is bonded in a 4-coordinate geometry to four equivalent O2- atoms. All Te–O bond lengths are 2.03 Å. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Cu2+ and one Te4+ atom. In the second O2- site, O2- is bonded in a distorted bent 120 degrees geometry to two Te4+ atoms. In the third O2- site, O2- is bonded in a 4-coordinate geometry to three equivalent Cu2+ and one Te4+ atom. Cl1- is bonded in a distorted single-bond geometry to one Cu2+ atom.

36 MATERIALS SCIENCE↗