Reversible hydrogen storage in titanium-catalyzed LiAlH4-LiBH4 system
Identifieur interne : 000D47 ( Chine/Analysis ); précédent : 000D46; suivant : 000D48Reversible hydrogen storage in titanium-catalyzed LiAlH4-LiBH4 system
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Abstract
We have investigated the hydrogen storage properties of the LiAlH4-LiBH4 system, both un-doped and doped with titanium based catalysts. It was found that TiF3 exhibited the superior catalytic effects in terms of enhancing the hydriding/dehydriding kinetics and reducing the dehydrogenation temperature of the LiAlH4-LiBH4 system. Compared to the un-doped LiAlH4-LiBH4 system, the onset temperatures of the 5 mol% TiF3-doped sample for the first and second dehydrogenation steps were decreased by 64 and 150°C, respectively. X-ray diffraction patterns of the dehydrogenated samples revealed that the produced Al from LiAlH4 could react with B from the decomposition of LiBH4 to form AlB2 and LiAl compounds. Pressure-composition-temperature (PCT) and van't Hoff plots made it clear that the decomposition enthalpy of LiBH4 in the TiF3-doped LiAlH4-LiBH4 system is decreased from 74kJ/(mol of H2) for the pure LiBH4 to 60.4 kJ/(mol of H2). The dehydrogenation products of the TiF3-doped LiAlH4-LiBH4 sample can absorb 3.76 and 4.78 wt.% of hydrogen in 1 h and 14 h, respectively, at 600 °C and under 4 MPa of hydrogen. The formation of LiBH4 was detected by X-ray diffraction in the rehydrogenated sample.
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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en" level="a">Reversible hydrogen storage in titanium-catalyzed LiAlH<sub>4</sub>-LiBH<sub>4</sub> system</title><author><name sortKey="Mao, J F" uniqKey="Mao J">J. F. Mao</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Institute for Superconducting and Electronic Materials, University of Wollongong</s1><s2>NSW 2522</s2><s3>AUS</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ></inist:fA14><country>Australie</country><wicri:noRegion>NSW 2522</wicri:noRegion></affiliation></author><author><name sortKey="Guo, Z P" uniqKey="Guo Z">Z. P. Guo</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Institute for Superconducting and Electronic Materials, University of Wollongong</s1><s2>NSW 2522</s2><s3>AUS</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ></inist:fA14><country>Australie</country><wicri:noRegion>NSW 2522</wicri:noRegion></affiliation><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>School of Mechanical, Materials & Mechatronics Engineering, University of Wollongong</s1><s2>NSW 2522</s2><s3>AUS</s3><sZ>2 aut.</sZ></inist:fA14><country>Australie</country><wicri:noRegion>NSW 2522</wicri:noRegion></affiliation><affiliation wicri:level="1"><inist:fA14 i1="03"><s1>CSIRO National Hydrogen Materials Alliance, CSIRO Energy Centre, 10 Murray Dwyer Circuit, Steel River Estate, Mayfield West</s1><s2>NSW 2304</s2><s3>AUS</s3><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ></inist:fA14><country>Australie</country><wicri:noRegion>NSW 2304</wicri:noRegion></affiliation></author><author><name sortKey="Liu, H K" uniqKey="Liu H">H. K. Liu</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Institute for Superconducting and Electronic Materials, University of Wollongong</s1><s2>NSW 2522</s2><s3>AUS</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ></inist:fA14><country>Australie</country><wicri:noRegion>NSW 2522</wicri:noRegion></affiliation><affiliation wicri:level="1"><inist:fA14 i1="03"><s1>CSIRO National Hydrogen Materials Alliance, CSIRO Energy Centre, 10 Murray Dwyer Circuit, Steel River Estate, Mayfield West</s1><s2>NSW 2304</s2><s3>AUS</s3><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ></inist:fA14><country>Australie</country><wicri:noRegion>NSW 2304</wicri:noRegion></affiliation></author><author><name sortKey="Yu, X B" uniqKey="Yu X">X. B. Yu</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Institute for Superconducting and Electronic Materials, University of Wollongong</s1><s2>NSW 2522</s2><s3>AUS</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ></inist:fA14><country>Australie</country><wicri:noRegion>NSW 2522</wicri:noRegion></affiliation><affiliation wicri:level="1"><inist:fA14 i1="03"><s1>CSIRO National Hydrogen Materials Alliance, CSIRO Energy Centre, 10 Murray Dwyer Circuit, Steel River Estate, Mayfield West</s1><s2>NSW 2304</s2><s3>AUS</s3><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ></inist:fA14><country>Australie</country><wicri:noRegion>NSW 2304</wicri:noRegion></affiliation><affiliation wicri:level="1"><inist:fA14 i1="04"><s1>Department of Materials Science, Fudan University</s1><s2>Shanghai 200433</s2><s3>CHN</s3><sZ>4 aut.</sZ></inist:fA14><country>République populaire de Chine</country><wicri:noRegion>Shanghai 200433</wicri:noRegion></affiliation></author></titleStmt><publicationStmt><idno type="inist">10-0037857</idno><date when="2009">2009</date><idno type="stanalyst">PASCAL 10-0037857 INIST</idno><idno type="RBID">Pascal:10-0037857</idno><idno type="wicri:Area/Main/Corpus">004B77</idno><idno type="wicri:Area/Main/Repository">004C64</idno><idno type="wicri:Area/Chine/Extraction">000D47</idno></publicationStmt><seriesStmt><idno type="ISSN">0925-8388</idno><title level="j" type="abbreviated">J. alloys compd.</title><title level="j" type="main">Journal of alloys and compounds</title></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Alanate</term><term>Aluminium boride</term><term>Catalyst</term><term>Doping</term><term>Enthalpy</term><term>Hydrogen 1</term><term>Hydrogen storage</term><term>Indium addition</term><term>Lithium Hydroborates</term><term>Thermodynamic properties</term><term>Titanium</term><term>X ray diffraction</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Stockage hydrogène</term><term>Catalyseur</term><term>Dopage</term><term>Diffraction RX</term><term>Propriété thermodynamique</term><term>Enthalpie</term><term>Addition indium</term><term>Hydrogène 1</term><term>Titane</term><term>Lithium Hydroborate</term><term>Borure d'aluminium</term><term>Ti</term><term>LiBH4</term><term>Li</term><term>6540G</term><term>Alanate</term></keywords><keywords scheme="Wicri" type="concept" xml:lang="fr"><term>Dopage</term><term>Titane</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">We have investigated the hydrogen storage properties of the LiAlH<sub>4</sub>-LiBH<sub>4</sub> system, both un-doped and doped with titanium based catalysts. It was found that TiF<sub>3</sub> exhibited the superior catalytic effects in terms of enhancing the hydriding/dehydriding kinetics and reducing the dehydrogenation temperature of the LiAlH<sub>4</sub>-LiBH<sub>4</sub> system. Compared to the un-doped LiAlH<sub>4</sub>-LiBH<sub>4</sub> system, the onset temperatures of the 5 mol% TiF<sub>3</sub>-doped sample for the first and second dehydrogenation steps were decreased by 64 and 150<sub>°</sub>C, respectively. X-ray diffraction patterns of the dehydrogenated samples revealed that the produced Al from LiAlH<sub>4</sub> could react with B from the decomposition of LiBH<sub>4</sub> to form AlB<sub>2</sub> and LiAl compounds. Pressure-composition-temperature (PCT) and van't Hoff plots made it clear that the decomposition enthalpy of LiBH<sub>4</sub> in the TiF<sub>3</sub>-doped LiAlH<sub>4</sub>-LiBH<sub>4</sub> system is decreased from 74kJ/(mol of H<sub>2</sub>) for the pure LiBH<sub>4</sub> to 60.4 kJ/(mol of H<sub>2</sub>). The dehydrogenation products of the TiF<sub>3</sub>-doped LiAlH<sub>4</sub>-LiBH<sub>4</sub> sample can absorb 3.76 and 4.78 wt.% of hydrogen in 1 h and 14 h, respectively, at 600 <sub>°</sub>C and under 4 MPa of hydrogen. The formation of LiBH<sub>4</sub> was detected by X-ray diffraction in the rehydrogenated sample.</div></front></TEI><inist><standard h6="B"><pA><fA01 i1="01" i2="1"><s0>0925-8388</s0></fA01><fA03 i2="1"><s0>J. alloys compd.</s0></fA03><fA05><s2>487</s2></fA05><fA06><s2>1-2</s2></fA06><fA08 i1="01" i2="1" l="ENG"><s1>Reversible hydrogen storage in titanium-catalyzed LiAlH<sub>4</sub>-LiBH<sub>4</sub> system</s1></fA08><fA11 i1="01" i2="1"><s1>MAO (J. F.)</s1></fA11><fA11 i1="02" i2="1"><s1>GUO (Z. P.)</s1></fA11><fA11 i1="03" i2="1"><s1>LIU (H. K.)</s1></fA11><fA11 i1="04" i2="1"><s1>YU (X. B.)</s1></fA11><fA14 i1="01"><s1>Institute for Superconducting and Electronic Materials, University of Wollongong</s1><s2>NSW 2522</s2><s3>AUS</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ></fA14><fA14 i1="02"><s1>School of Mechanical, Materials & Mechatronics Engineering, University of Wollongong</s1><s2>NSW 2522</s2><s3>AUS</s3><sZ>2 aut.</sZ></fA14><fA14 i1="03"><s1>CSIRO National Hydrogen Materials Alliance, CSIRO Energy Centre, 10 Murray Dwyer Circuit, Steel River Estate, Mayfield West</s1><s2>NSW 2304</s2><s3>AUS</s3><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ></fA14><fA14 i1="04"><s1>Department of Materials Science, Fudan University</s1><s2>Shanghai 200433</s2><s3>CHN</s3><sZ>4 aut.</sZ></fA14><fA20><s1>434-438</s1></fA20><fA21><s1>2009</s1></fA21><fA23 i1="01"><s0>ENG</s0></fA23><fA43 i1="01"><s1>INIST</s1><s2>1151</s2><s5>354000171444610880</s5></fA43><fA44><s0>0000</s0><s1>© 2010 INIST-CNRS. All rights reserved.</s1></fA44><fA45><s0>41 ref.</s0></fA45><fA47 i1="01" i2="1"><s0>10-0037857</s0></fA47><fA60><s1>P</s1><s3>PR</s3></fA60><fA61><s0>A</s0></fA61><fA64 i1="01" i2="1"><s0>Journal of alloys and compounds</s0></fA64><fA66 i1="01"><s0>CHE</s0></fA66><fC01 i1="01" l="ENG"><s0>We have investigated the hydrogen storage properties of the LiAlH<sub>4</sub>-LiBH<sub>4</sub> system, both un-doped and doped with titanium based catalysts. It was found that TiF<sub>3</sub> exhibited the superior catalytic effects in terms of enhancing the hydriding/dehydriding kinetics and reducing the dehydrogenation temperature of the LiAlH<sub>4</sub>-LiBH<sub>4</sub> system. Compared to the un-doped LiAlH<sub>4</sub>-LiBH<sub>4</sub> system, the onset temperatures of the 5 mol% TiF<sub>3</sub>-doped sample for the first and second dehydrogenation steps were decreased by 64 and 150<sub>°</sub>C, respectively. X-ray diffraction patterns of the dehydrogenated samples revealed that the produced Al from LiAlH<sub>4</sub> could react with B from the decomposition of LiBH<sub>4</sub> to form AlB<sub>2</sub> and LiAl compounds. Pressure-composition-temperature (PCT) and van't Hoff plots made it clear that the decomposition enthalpy of LiBH<sub>4</sub> in the TiF<sub>3</sub>-doped LiAlH<sub>4</sub>-LiBH<sub>4</sub> system is decreased from 74kJ/(mol of H<sub>2</sub>) for the pure LiBH<sub>4</sub> to 60.4 kJ/(mol of H<sub>2</sub>). The dehydrogenation products of the TiF<sub>3</sub>-doped LiAlH<sub>4</sub>-LiBH<sub>4</sub> sample can absorb 3.76 and 4.78 wt.% of hydrogen in 1 h and 14 h, respectively, at 600 <sub>°</sub>C and under 4 MPa of hydrogen. The formation of LiBH<sub>4</sub> was detected by X-ray diffraction in the rehydrogenated sample.</s0></fC01><fC02 i1="01" i2="X"><s0>001C01I01</s0></fC02><fC02 i1="02" i2="3"><s0>001B60E40G</s0></fC02><fC03 i1="01" i2="3" l="FRE"><s0>Stockage hydrogène</s0><s5>01</s5></fC03><fC03 i1="01" i2="3" l="ENG"><s0>Hydrogen storage</s0><s5>01</s5></fC03><fC03 i1="02" i2="X" l="FRE"><s0>Catalyseur</s0><s5>02</s5></fC03><fC03 i1="02" i2="X" l="ENG"><s0>Catalyst</s0><s5>02</s5></fC03><fC03 i1="02" i2="X" l="SPA"><s0>Catalizador</s0><s5>02</s5></fC03><fC03 i1="03" i2="X" l="FRE"><s0>Dopage</s0><s5>03</s5></fC03><fC03 i1="03" i2="X" l="ENG"><s0>Doping</s0><s5>03</s5></fC03><fC03 i1="03" i2="X" l="SPA"><s0>Doping</s0><s5>03</s5></fC03><fC03 i1="04" i2="X" l="FRE"><s0>Diffraction RX</s0><s5>04</s5></fC03><fC03 i1="04" i2="X" l="ENG"><s0>X ray diffraction</s0><s5>04</s5></fC03><fC03 i1="04" i2="X" l="SPA"><s0>Difracción RX</s0><s5>04</s5></fC03><fC03 i1="05" i2="X" l="FRE"><s0>Propriété thermodynamique</s0><s5>05</s5></fC03><fC03 i1="05" i2="X" l="ENG"><s0>Thermodynamic properties</s0><s5>05</s5></fC03><fC03 i1="05" i2="X" l="SPA"><s0>Propiedad termodinámica</s0><s5>05</s5></fC03><fC03 i1="06" i2="X" l="FRE"><s0>Enthalpie</s0><s5>06</s5></fC03><fC03 i1="06" i2="X" l="ENG"><s0>Enthalpy</s0><s5>06</s5></fC03><fC03 i1="06" i2="X" l="SPA"><s0>Entalpía</s0><s5>06</s5></fC03><fC03 i1="07" i2="X" l="FRE"><s0>Addition indium</s0><s5>07</s5></fC03><fC03 i1="07" i2="X" l="ENG"><s0>Indium addition</s0><s5>07</s5></fC03><fC03 i1="07" i2="X" l="SPA"><s0>Adición indio</s0><s5>07</s5></fC03><fC03 i1="08" i2="3" l="FRE"><s0>Hydrogène 1</s0><s5>08</s5></fC03><fC03 i1="08" i2="3" l="ENG"><s0>Hydrogen 1</s0><s5>08</s5></fC03><fC03 i1="09" i2="X" l="FRE"><s0>Titane</s0><s2>NC</s2><s5>15</s5></fC03><fC03 i1="09" i2="X" l="ENG"><s0>Titanium</s0><s2>NC</s2><s5>15</s5></fC03><fC03 i1="09" i2="X" l="SPA"><s0>Titanio</s0><s2>NC</s2><s5>15</s5></fC03><fC03 i1="10" i2="X" l="FRE"><s0>Lithium Hydroborate</s0><s2>NC</s2><s2>NA</s2><s5>16</s5></fC03><fC03 i1="10" i2="X" l="ENG"><s0>Lithium Hydroborates</s0><s2>NC</s2><s2>NA</s2><s5>16</s5></fC03><fC03 i1="10" i2="X" l="SPA"><s0>Litio Hidroborato</s0><s2>NC</s2><s2>NA</s2><s5>16</s5></fC03><fC03 i1="11" i2="X" l="FRE"><s0>Borure d'aluminium</s0><s5>17</s5></fC03><fC03 i1="11" i2="X" l="ENG"><s0>Aluminium boride</s0><s5>17</s5></fC03><fC03 i1="11" i2="X" l="SPA"><s0>Aluminio boruro</s0><s5>17</s5></fC03><fC03 i1="12" i2="X" l="FRE"><s0>Ti</s0><s4>INC</s4><s5>46</s5></fC03><fC03 i1="13" i2="X" l="FRE"><s0>LiBH4</s0><s4>INC</s4><s5>47</s5></fC03><fC03 i1="14" i2="X" l="FRE"><s0>Li</s0><s4>INC</s4><s5>48</s5></fC03><fC03 i1="15" i2="X" l="FRE"><s0>6540G</s0><s4>INC</s4><s5>71</s5></fC03><fC03 i1="16" i2="X" l="FRE"><s0>Alanate</s0><s4>CD</s4><s5>96</s5></fC03><fC03 i1="16" i2="X" l="ENG"><s0>Alanate</s0><s4>CD</s4><s5>96</s5></fC03><fN21><s1>025</s1></fN21><fN44 i1="01"><s1>OTO</s1></fN44><fN82><s1>OTO</s1></fN82></pA></standard></inist></record>Pour manipuler ce document sous Unix (Dilib)
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