Synthesis, Crystal Structure, and Thermal Decomposition of Strontium Amidoborane

被引：92

作者：

Zhang, Qingan ^{[1
]}

Tang, Chunxia ^{[1
]}

Fang, Chunheng ^{[1
]}

Fang, Fang ^{[2
]}

Sun, Dalin ^{[2
]}

Ouyang, Liuzhang ^{[3
]}

Zhu, Min ^{[3
]}

机构：

[1] Anhui Univ Technol, Sch Mat Sci & Engn, Maanshan 243002, Peoples R China

[2] Fudan Univ, Dept Mat Sci, Shanghai 200433, Peoples R China

[3] S China Univ Technol, Sch Mat Sci & Engn, Guangzhou 510641, Peoples R China

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2010年 / 114卷 / 03期

基金：

中国国家自然科学基金;

关键词：

HYDROGEN STORAGE MATERIAL; NEUTRON POWDER DIFFRACTION; N-H COMPOUNDS; AMMONIA-BORANE; CATALYZED DEHYDROGENATION; LITHIUM; PHASE; RELEASE; PROGRAM;

D O I：

10.1021/jp9097233

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Strontium amidoborane, Sr(NH2BH3)(2), is synthesized by gently milling the powder mixtures of SrH2 and ammonia borane (in a 1:2 molar ratio), followed by isothermally processing the postmilled mixtures at 45 degrees C for 2 h. It is found that Sr(NH2BH3)(2) crystallizes with a monoclinic structure in space group C2, with lattice parameters a = 8.1660(4) angstrom, b = 5.0969(3) angstrom, c = 6.7258(4) angstrom, and beta = 94.392(4)degrees, and with Z = 2. In the structure, each Sr2+ bonds with two [NH2BH3](2-) ions with a Sr-N distance of 2.68 angstrom. Thermal analyses show that the decomposition of Sr(NH2BH3)(2) into Sr(NBH)(2) and H-2 initiates at about 60 degrees C and becomes violent as the temperature increases to 93 degrees C in the heating process at a rate of 2 degrees C min(-1). With the release of H-2, a considerable amount of NH3 and small amounts of B2H6 are also emitted due to the decomposition of Sr(NBH)(2).

引用

页码：1709 / 1714

页数：6

共 34 条

[1] SIR92 - a program for automatic solution of crystal structures by direct methods [J].

ALTOMARE, A ;

CASCARANO, G ;

GIACOVAZZO, G ;

GUAGLIARDI, A ;

BURLA, MC ;

POLIDORI, G ;

CAMALLI, M .

JOURNAL OF APPLIED CRYSTALLOGRAPHY, 1994, 27 :435-435

[2] EXTRA: A program for extracting structure factor amplitudes from powder diffraction data. [J].

Altomare, A ;

Burla, MC ;

Cascarano, G ;

Giacovazzo, G ;

Guagliardi, A ;

Moliterni, AGG ;

Polidori, G .

JOURNAL OF APPLIED CRYSTALLOGRAPHY, 1995, 28 :842-846

[3]

Auffermann G, 2001, ANGEW CHEM INT EDIT, V40, P547, DOI 10.1002/1521-3773(20010202)40:3<547::AID-ANIE547>3.0.CO

[4]

2-X

[5] Thermal decomposition of B-N-H compounds investigated by using combined thermoanalytical methods [J].

Baitalow, F ;

Baumann, J ;

Wolf, G ;

Jaenicke-Rössler, K ;

Leitner, G .

THERMOCHIMICA ACTA, 2002, 391 (1-2) :159-168

[6] Thermal decomposition of polymeric aminoborane (H2BNH2)x under hydrogen release [J].

Baumann, J ;

Baitalow, E ;

Wolf, G .

THERMOCHIMICA ACTA, 2005, 430 (1-2) :9-14

[7] Ruthenium-Catalyzed Dehydrogenation of Ammonia Boranes [J].

Blaquiere, Nicole ;

Diallo-Garcia, Sarah ;

Gorelsky, Serge I. ;

Black, Daniel A. ;

Fagnou, Keith .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2008, 130 (43) :14034-+

[8] Interaction of hydrogen with metal nitrides and imides [J].

Chen, P ;

Xiong, ZT ;

Luo, JZ ;

Lin, JY ;

Tan, KL .

NATURE, 2002, 420 (6913) :302-304

[9] Iridium-catalyzed dehydrogenation of substituted amine boranes: kinetics, thermodynamics, and implications for hydrogen storage [J].

Dietrich, Brandon L. ;

Goldberg, Karen I. ;

Heinekey, D. Michael ;

Autrey, Tom ;

Linehan, John C. .

INORGANIC CHEMISTRY, 2008, 47 (19) :8583-8585

[10] Calcium amidotrihydroborate: A hydrogen storage material [J].

Diyabalanage, Himashime V. K. ;

Shrestha, Roshan P. ;

Semelsberger, Troy A. ;

Scott, Brian L. ;

Bowden, Mark E. ;

Davis, Benjamin L. ;

Burrell, Anthony K. .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2007, 46 (47) :8995-8997

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