SEARCH · Engineering Papers

Results for “Sr(CO2)2”

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.

SourceResearch connectionFrom yearThrough year

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

At least 19 records

All sources NASA NTRS DOE OSTI

DOE OSTI2020

Materials Data on Sr(CO2)2 by Materials Project

SrC2O4 crystallizes in the orthorhombic P2_12_12_1 space group. The structure is three-dimensional. Sr2+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Sr–O bond distances ranging from 2.51–2.78 Å. There are two inequivalent C3+ sites. In the first C3+ site, C3+ is bonded in a bent 120 degrees geometry to two O2- atoms. There is one shorter (1.25 Å) and one longer (1.26 Å) C–O bond length. In the second C3+ site, C3+ is bonded in a bent 120 degrees geometry to two O2- atoms. Both C–O bond lengths are 1.25 Å. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a 1-coordinate geometry to two equivalent Sr2+ and one C3+ atom. In the second O2- site, O2- is bonded in a 1-coordinate geometry to two equivalent Sr2+ and one C3+ atom. In the third O2- site, O2- is bonded in a distorted single-bond geometry to two equivalent Sr2+ and one C3+ atom. In the fourth O2- site, O2- is bonded in a distorted single-bond geometry to two equivalent Sr2+ and one C3+ atom.

36 MATERIALS SCIENCE↗

DOE OSTI2020

Materials Data on Sr(CO2)2 by Materials Project

SrC2O4 crystallizes in the orthorhombic P2_12_12_1 space group. The structure is three-dimensional. Sr2+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Sr–O bond distances ranging from 2.46–2.74 Å. There are two inequivalent C3+ sites. In the first C3+ site, C3+ is bonded in a bent 120 degrees geometry to two O2- atoms. There is one shorter (1.25 Å) and one longer (1.28 Å) C–O bond length. In the second C3+ site, C3+ is bonded in a bent 120 degrees geometry to two O2- atoms. There is one shorter (1.26 Å) and one longer (1.28 Å) C–O bond length. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted single-bond geometry to two equivalent Sr2+ and one C3+ atom. In the second O2- site, O2- is bonded in a distorted single-bond geometry to one Sr2+ and one C3+ atom. In the third O2- site, O2- is bonded in a distorted single-bond geometry to one Sr2+ and one C3+ atom. In the fourth O2- site, O2- is bonded in a distorted single-bond geometry to two equivalent Sr2+ and one C3+ atom.

36 MATERIALS SCIENCE↗

DOE OSTI2020

Materials Data on Sr(CO2)2 by Materials Project

SrC2O4 crystallizes in the orthorhombic P2_12_12_1 space group. The structure is one-dimensional and consists of two SrC2O4 ribbons oriented in the (1, 0, 0) direction. Sr2+ is bonded in a 2-coordinate geometry to four O2- atoms. There are a spread of Sr–O bond distances ranging from 2.42–2.94 Å. There are two inequivalent C3+ sites. In the first C3+ site, C3+ is bonded in a linear geometry to two O2- atoms. Both C–O bond lengths are 1.18 Å. In the second C3+ site, C3+ is bonded in a bent 120 degrees geometry to two O2- atoms. There is one shorter (1.31 Å) and one longer (1.33 Å) C–O bond length. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted single-bond geometry to one Sr2+ and one C3+ atom. In the second O2- site, O2- is bonded in a single-bond geometry to one C3+ atom. In the third O2- site, O2- is bonded in a water-like geometry to one Sr2+ and one C3+ atom. In the fourth O2- site, O2- is bonded in a 1-coordinate geometry to two equivalent Sr2+ and one C3+ atom.

36 MATERIALS SCIENCE↗

NASA NTRS1992

A theoretical study of Mg(CO2)n(+) and Sr(CO2)n(+) for n = 1 and 2 and Mg2CO2(+)

The structure and binding energies are determined for Mg(CO2)n(+) and Sr(CO2)n(+) for n = 1 and 2. We also consider Mg2(+) and Mg2CO2(+) to compare the binding of CO2 to a single metal ion with the binding to a diatomic ion. The vertical excitation energies are computed for all species. The potential energy curves for the low-lying states of Mg2(+) are reported. The MgCO2(+) results are in good agreement with the experimental results of Duncan and co-workers.

Sodupe, Mariona↗

DOE OSTI2020

Materials Data on SrH2(CO2)2 by Materials Project

Sr(HCOO)2 crystallizes in the tetragonal P4_12_12 space group. The structure is three-dimensional. Sr2+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Sr–O bond distances ranging from 2.51–2.63 Å. C2+ is bonded in a trigonal planar geometry to one H1+ and two O2- atoms. The C–H bond length is 1.11 Å. There is one shorter (1.26 Å) and one longer (1.28 Å) C–O bond length. H1+ is bonded in a single-bond geometry to one C2+ atom. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded in a 1-coordinate geometry to two equivalent Sr2+ and one C2+ atom. In the second O2- site, O2- is bonded in a distorted single-bond geometry to one Sr2+ and one C2+ atom.

36 MATERIALS SCIENCE↗

DOE OSTI2020

Materials Data on SrH2(CO2)2 by Materials Project

Sr(HCOO)2 crystallizes in the orthorhombic P2_12_12_1 space group. The structure is three-dimensional. Sr2+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Sr–O bond distances ranging from 2.53–2.73 Å. There are two inequivalent C2+ sites. In the first C2+ site, C2+ is bonded in a trigonal planar geometry to one H1+ and two O2- atoms. The C–H bond length is 1.11 Å. Both C–O bond lengths are 1.27 Å. In the second C2+ site, C2+ is bonded in a trigonal planar geometry to one H1+ and two O2- atoms. The C–H bond length is 1.11 Å. Both C–O bond lengths are 1.27 Å. There are two inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a single-bond geometry to one C2+ atom. In the second H1+ site, H1+ is bonded in a single-bond geometry to one C2+ atom. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted single-bond geometry to two equivalent Sr2+ and one C2+ atom. In the second O2- site, O2- is bonded in a distorted single-bond geometry to two equivalent Sr2+ and one C2+ atom. In the third O2- site, O2- is bonded in a distorted single-bond geometry to two equivalent Sr2+ and one C2+ atom. In the fourth O2- site, O2- is bonded in a distorted single-bond geometry to two equivalent Sr2+ and one C2+ atom.

36 MATERIALS SCIENCE↗

DOE OSTI2025

Theoretical study of CO2 capture mechanisms of SrO and Sr(OH)2.nH2O (n=0,1,8)

This presentation encapsulated the use of density functional theory (DFT) to investigate the mechanism of CO2 conversion on various crystal surfaces, including SrO, Sr(OH)2, Sr(OH)2·H2O, and Sr(OH)2·8H2O. The study provides unique insights into the fundamental mechanism for CO2 capture using SrO and its hydrated forms.

catalyst performance↗

DOE OSTI2024

Density functional theory study of the thermodynamic properties and pathways of SrO, Sr(OH)2 and Sr(OH)2.8H2O capturing CO2 reactions

Presentation for American Physical Society (APS) March Meeting.

Nguyen, Manh Tien↗

DOE OSTI2025

Theoretical study of CO2 capture mechanisms of SrO and Sr(OH)2.nH2O (n=0,1,8)

In this presentation, the adsorption reactions of CO2 on SrO surfaces and its hydrated counterparts are examined. The predicted energies of CO2 adsorption on follows the order of increasing H2O content. The carbonation on the monohydrate surface is barrierless, whereas the CO2 reaction on the Sr(OH)2 and the octahydrate surfaces follows pathways with finite activation barriers. The thermodynamics of bulk reaction is also addressed.

computational science and engineering↗

DOE OSTI2020

Materials Data on SrCo(GeO3)2 by Materials Project

SrCoGe2O6 is Esseneite structured and crystallizes in the monoclinic C2/c space group. The structure is three-dimensional. Sr2+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Sr–O bond distances ranging from 2.51–2.78 Å. Co2+ is bonded to six O2- atoms to form CoO6 octahedra that share corners with six equivalent GeO4 tetrahedra and edges with two equivalent CoO6 octahedra. There are a spread of Co–O bond distances ranging from 2.12–2.17 Å. Ge4+ is bonded to four O2- atoms to form GeO4 tetrahedra that share corners with three equivalent CoO6 octahedra and corners with two equivalent GeO4 tetrahedra. The corner-sharing octahedra tilt angles range from 37–61°. There are a spread of Ge–O bond distances ranging from 1.74–1.85 Å. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a 2-coordinate geometry to two equivalent Sr2+ and two equivalent Ge4+ atoms. In the second O2- site, O2- is bonded to one Sr2+, two equivalent Co2+, and one Ge4+ atom to form a mixture of distorted edge and corner-sharing OSrCo2Ge tetrahedra. In the third O2- site, O2- is bonded in a distorted T-shaped geometry to one Sr2+, one Co2+, and one Ge4+ atom.

36 MATERIALS SCIENCE↗

DOE OSTI2020

Materials Data on SrCo2(AsO4)2 by Materials Project

SrCo2(AsO4)2 crystallizes in the triclinic P-1 space group. The structure is three-dimensional. Sr2+ is bonded in a 3-coordinate geometry to three O2- atoms. There are a spread of Sr–O bond distances ranging from 1.76–2.34 Å. There are two inequivalent Co2+ sites. In the first Co2+ site, Co2+ is bonded in a 2-coordinate geometry to three O2- atoms. There are a spread of Co–O bond distances ranging from 1.29–2.28 Å. In the second Co2+ site, Co2+ is bonded in a 2-coordinate geometry to three O2- atoms. There are a spread of Co–O bond distances ranging from 1.73–2.44 Å. There are two inequivalent As5+ sites. In the first As5+ site, As5+ is bonded in a 1-coordinate geometry to four O2- atoms. There are a spread of As–O bond distances ranging from 1.17–2.46 Å. In the second As5+ site, As5+ is bonded in a 5-coordinate geometry to five O2- atoms. There are a spread of As–O bond distances ranging from 1.69–2.50 Å. There are eight inequivalent O2- sites. In the first O2- site, O2- is bonded in a 3-coordinate geometry to two Co2+ and one As5+ atom. In the second O2- site, O2- is bonded in a single-bond geometry to one As5+ atom. In the third O2- site, O2- is bonded in a 3-coordinate geometry to two Co2+ and two As5+ atoms. In the fourth O2- site, O2- is bonded in a 2-coordinate geometry to one Co2+ and one As5+ atom. In the fifth O2- site, O2- is bonded in a water-like geometry to one Sr2+ and one As5+ atom. In the sixth O2- site, O2- is bonded in a distorted water-like geometry to one Co2+ and one As5+ atom. In the seventh O2- site, O2- is bonded in a 1-coordinate geometry to one Sr2+ and one As5+ atom. In the eighth O2- site, O2- is bonded in a 2-coordinate geometry to one Sr2+ and one As5+ atom.

36 MATERIALS SCIENCE↗

DOE OSTI2020

Materials Data on Sr(CoP)2 by Materials Project

SrCo2P2 is alpha bismuth trifluoride-derived structured and crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Sr2+ is bonded in a body-centered cubic geometry to eight equivalent P3- atoms. All Sr–P bond lengths are 3.20 Å. Co2+ is bonded to four equivalent P3- atoms to form a mixture of edge and corner-sharing CoP4 tetrahedra. All Co–P bond lengths are 2.22 Å. P3- is bonded in a 8-coordinate geometry to four equivalent Sr2+ and four equivalent Co2+ atoms.

36 MATERIALS SCIENCE↗

DOE OSTI2020

Materials Data on Sr(CoAs)2 by Materials Project

Sr(CoAs)2 is alpha bismuth trifluoride-derived structured and crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Sr2+ is bonded in a body-centered cubic geometry to eight equivalent As3- atoms. All Sr–As bond lengths are 3.29 Å. Co2+ is bonded to four equivalent As3- atoms to form a mixture of edge and corner-sharing CoAs4 tetrahedra. All Co–As bond lengths are 2.34 Å. As3- is bonded in a 8-coordinate geometry to four equivalent Sr2+ and four equivalent Co2+ atoms.

36 MATERIALS SCIENCE↗

DOE OSTI2020

Materials Data on SrCo3(P2O7)2 by Materials Project

SrCo3(P2O7)2 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. Sr2+ is bonded in a distorted body-centered cubic geometry to eight O2- atoms. There are a spread of Sr–O bond distances ranging from 2.59–2.76 Å. There are two inequivalent Co2+ sites. In the first Co2+ site, Co2+ is bonded to six O2- atoms to form CoO6 octahedra that share corners with six PO4 tetrahedra and edges with two equivalent CoO6 octahedra. There are a spread of Co–O bond distances ranging from 2.10–2.17 Å. In the second Co2+ site, Co2+ is bonded to six O2- atoms to form CoO6 octahedra that share corners with six PO4 tetrahedra and edges with two CoO6 octahedra. There are a spread of Co–O bond distances ranging from 2.10–2.26 Å. There are two inequivalent P5+ sites. In the first P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with five CoO6 octahedra and a cornercorner with one PO4 tetrahedra. The corner-sharing octahedra tilt angles range from 40–60°. There are a spread of P–O bond distances ranging from 1.53–1.61 Å. In the second P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with four CoO6 octahedra and a cornercorner with one PO4 tetrahedra. The corner-sharing octahedra tilt angles range from 47–59°. There are a spread of P–O bond distances ranging from 1.52–1.62 Å. There are seven inequivalent O2- sites. In the first O2- site, O2- is bonded in a 1-coordinate geometry to one Sr2+, two Co2+, and one P5+ atom. In the second O2- site, O2- is bonded in a 3-coordinate geometry to two Co2+ and one P5+ atom. In the third O2- site, O2- is bonded in a 2-coordinate geometry to one Sr2+, one Co2+, and one P5+ atom. In the fourth O2- site, O2- is bonded in a 3-coordinate geometry to one Sr2+, one Co2+, and one P5+ atom. In the fifth O2- site, O2- is bonded in a 3-coordinate geometry to one Sr2+, one Co2+, and one P5+ atom. In the sixth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to two P5+ atoms. In the seventh O2- site, O2- is bonded in a distorted trigonal planar geometry to two equivalent Co2+ and one P5+ atom.

36 MATERIALS SCIENCE↗

DOE OSTI2020

Materials Data on Sr3FeCo(ClO2)2 by Materials Project

Sr3FeCo(O2Cl)2 crystallizes in the tetragonal I4mm space group. The structure is three-dimensional. there are three inequivalent Sr2+ sites. In the first Sr2+ site, Sr2+ is bonded in a 9-coordinate geometry to four equivalent O2- and five Cl1- atoms. All Sr–O bond lengths are 2.63 Å. There are four shorter (3.08 Å) and one longer (3.25 Å) Sr–Cl bond lengths. In the second Sr2+ site, Sr2+ is bonded in a 9-coordinate geometry to four equivalent O2- and five Cl1- atoms. All Sr–O bond lengths are 2.63 Å. There are four shorter (3.14 Å) and one longer (3.41 Å) Sr–Cl bond lengths. In the third Sr2+ site, Sr2+ is bonded in a body-centered cubic geometry to eight O2- atoms. There are four shorter (2.64 Å) and four longer (2.73 Å) Sr–O bond lengths. Fe2+ is bonded in a distorted rectangular see-saw-like geometry to four equivalent O2- and one Cl1- atom. All Fe–O bond lengths are 2.05 Å. The Fe–Cl bond length is 2.98 Å. Co2+ is bonded to four equivalent O2- and one Cl1- atom to form corner-sharing CoClO4 square pyramids. All Co–O bond lengths are 2.05 Å. The Co–Cl bond length is 2.66 Å. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded to four Sr2+ and two equivalent Fe2+ atoms to form distorted OSr4Fe2 octahedra that share corners with eight OSr4Co2 octahedra, edges with three OSr4Co2 octahedra, and faces with four equivalent OSr4Fe2 octahedra. The corner-sharing octahedra tilt angles range from 2–65°. In the second O2- site, O2- is bonded to four Sr2+ and two equivalent Co2+ atoms to form a mixture of face, edge, and corner-sharing OSr4Co2 octahedra. The corner-sharing octahedra tilt angles range from 2–65°. There are two inequivalent Cl1- sites. In the first Cl1- site, Cl1- is bonded in a 6-coordinate geometry to five Sr2+ and one Fe2+ atom. In the second Cl1- site, Cl1- is bonded in a 6-coordinate geometry to five Sr2+ and one Co2+ atom.

36 MATERIALS SCIENCE↗

DOE OSTI2020

Materials Data on Sr2Co(ClO)2 by Materials Project

Sr2CoO2Cl2 is (La,Ba)CuO4-derived structured and crystallizes in the orthorhombic Immm space group. The structure is three-dimensional. Sr2+ is bonded in a 9-coordinate geometry to four O2- and five equivalent Cl1- atoms. There are two shorter (2.58 Å) and two longer (2.67 Å) Sr–O bond lengths. There are four shorter (3.13 Å) and one longer (3.30 Å) Sr–Cl bond lengths. Co2+ is bonded to four O2- and two equivalent Cl1- atoms to form distorted corner-sharing CoCl2O4 octahedra. The corner-sharing octahedral tilt angles are 0°. There are two shorter (2.01 Å) and two longer (2.13 Å) Co–O bond lengths. Both Co–Cl bond lengths are 2.72 Å. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded to four equivalent Sr2+ and two equivalent Co2+ atoms to form a mixture of distorted face, edge, and corner-sharing OSr4Co2 octahedra. The corner-sharing octahedral tilt angles are 0°. In the second O2- site, O2- is bonded to four equivalent Sr2+ and two equivalent Co2+ atoms to form a mixture of face, edge, and corner-sharing OSr4Co2 octahedra. The corner-sharing octahedral tilt angles are 0°. Cl1- is bonded in a 6-coordinate geometry to five equivalent Sr2+ and one Co2+ atom.

36 MATERIALS SCIENCE↗

DOE OSTI2020

Materials Data on Sr3Co2(ClO2)2 by Materials Project

Sr3Co2(O2Cl)2 crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. there are two inequivalent Sr2+ sites. In the first Sr2+ site, Sr2+ is bonded in a body-centered cubic geometry to eight equivalent O2- atoms. All Sr–O bond lengths are 2.68 Å. In the second Sr2+ site, Sr2+ is bonded in a 9-coordinate geometry to four equivalent O2- and five equivalent Cl1- atoms. All Sr–O bond lengths are 2.60 Å. There are four shorter (3.10 Å) and one longer (3.42 Å) Sr–Cl bond lengths. Co2+ is bonded to four equivalent O2- and one Cl1- atom to form corner-sharing CoClO4 square pyramids. All Co–O bond lengths are 2.04 Å. The Co–Cl bond length is 2.65 Å. O2- is bonded to four Sr2+ and two equivalent Co2+ atoms to form a mixture of distorted face, edge, and corner-sharing OSr4Co2 octahedra. The corner-sharing octahedra tilt angles range from 0–65°. Cl1- is bonded in a 6-coordinate geometry to five equivalent Sr2+ and one Co2+ atom.

36 MATERIALS SCIENCE↗

DOE OSTI2020

Materials Data on Sr3Nb2CoO9 by Materials Project

Sr3Nb2CoO9 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. there are three inequivalent Sr2+ sites. In the first Sr2+ site, Sr2+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Sr–O bond distances ranging from 2.47–3.08 Å. In the second Sr2+ site, Sr2+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Sr–O bond distances ranging from 2.45–3.11 Å. In the third Sr2+ site, Sr2+ is bonded in a 2-coordinate geometry to seven O2- atoms. There are a spread of Sr–O bond distances ranging from 2.53–3.11 Å. There are two inequivalent Nb5+ sites. In the first Nb5+ site, Nb5+ is bonded in a rectangular see-saw-like geometry to four O2- atoms. There are a spread of Nb–O bond distances ranging from 1.94–2.00 Å. In the second Nb5+ site, Nb5+ is bonded to six O2- atoms to form NbO6 octahedra that share corners with two equivalent NbO6 octahedra and corners with two equivalent CoO6 octahedra. The corner-sharing octahedra tilt angles range from 3–24°. There are a spread of Nb–O bond distances ranging from 1.97–2.04 Å. There are two inequivalent Co2+ sites. In the first Co2+ site, Co2+ is bonded in a square co-planar geometry to four O2- atoms. There is two shorter (1.88 Å) and two longer (1.90 Å) Co–O bond length. In the second Co2+ site, Co2+ is bonded to six O2- atoms to form CoO6 octahedra that share corners with four equivalent NbO6 octahedra. The corner-sharing octahedra tilt angles range from 3–19°. There is two shorter (1.98 Å) and four longer (1.99 Å) Co–O bond length. There are nine inequivalent O2- sites. In the first O2- site, O2- is bonded in a 2-coordinate geometry to one Sr2+, one Nb5+, and one Co2+ atom. In the second O2- site, O2- is bonded in a water-like geometry to one Nb5+ and one Co2+ atom. In the third O2- site, O2- is bonded in a 4-coordinate geometry to four Sr2+ and one Co2+ atom. In the fourth O2- site, O2- is bonded in a 6-coordinate geometry to four Sr2+, one Nb5+, and one Co2+ atom. In the fifth O2- site, O2- is bonded in a 3-coordinate geometry to three Sr2+ and one Nb5+ atom. In the sixth O2- site, O2- is bonded in a bent 150 degrees geometry to two equivalent Nb5+ atoms. In the seventh O2- site, O2- is bonded in a 1-coordinate geometry to four Sr2+ and one Nb5+ atom. In the eighth O2- site, O2- is bonded in a 2-coordinate geometry to three Sr2+ and two equivalent Nb5+ atoms. In the ninth O2- site, O2- is bonded in a 2-coordinate geometry to four Sr2+, one Nb5+, and one Co2+ atom.

36 MATERIALS SCIENCE↗