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1、摘要近年來,新型配位氫化物以其具有較高的理論儲氫量,從而引發(fā)了大批學(xué)者的研究。本文是在對國內(nèi)外金屬配位氫化物以及金屬氮氫化物的研究進行全面綜述的基礎(chǔ)上,采用機械高能球磨金屬氮氫化物L(fēng)iNH2與金屬配位氫化物L(fēng)認(rèn)lH4制備Li.AI-N.H復(fù)合體系儲氫材料,通過XRD、DTA、紅外光譜分析測試和吸放氫性能測試,對樣品性能進行分析。實驗主要是針對球磨時間,催化劑對Li.A1-N—H復(fù)合體系儲氫材料的影響進行研究。對LiNH2一L認(rèn)lH4復(fù)合體系性能研究表明:LiNH2/L認(rèn)lH4體系經(jīng)球磨4小時后總放氫量達(dá)到7.5耐.%,主要生成Li3AlN2和L認(rèn)14H130在
2、此體系基礎(chǔ)上添加Ti粉、TiH2、TiF3、CeCl3以及V205作為催化劑,其結(jié)果表明催化劑的添加降低了升溫過程中LiNH2.LiAlH4復(fù)合體系的反應(yīng)焓變,促使放氫反應(yīng)更容易進行,TiF3添加加快了LiNH2.LiAlH4體系的吸氫速率與吸氫且里O對LiNH2.2L認(rèn)1H4復(fù)合體系性能研究表明,LiNH2/2LiAlH4體系經(jīng)球磨4小時后樣品的總放氫量8.37wt.%。對2LiNH2.Li燦H4復(fù)合體系性能研究表明,2LiNH2/L認(rèn)m4體系經(jīng)球磨4小時后總放氫量為7.0wt.%。關(guān)鍵詞:復(fù)合儲氫材料;I.,INIl2;Li舢H.;催化劑Inrecenty
3、ears,newmetalcomplexhydrideshascausedalargenumberofacademicresearch,becauseoftheirextremelyhighhydrogenstoragecapacity.。一●Basedonthereviewoftheresearchonthemetalcomplexhydridesandmetal·-N·-Hcompoundsforthehydrogenstoragematerialswereselectedasthestudyobjectofthiswork.TheLi-A1-N—Hsys
4、temhydrogenstoragematerialwasmechanicallymilledthemixtureofLiNH2andLiAlH4.TheperformanceofsamplewasanalysedbyXRD,DTA,F(xiàn)IRT,absorptionanddesorptionhydrogenperformancetest.Thisexperimentmainlydiscussedtheeffectoftheball-millingtime,catalystonLi-AI-N—Hcompositesystemhydrogenstoragemater
5、ial.TheresearchoftheLiNH2一LiAlH4compositesystemshowedthattheLiNH2/LiAlH4systemdesorbed7.5wt.%hydrogenaRerballmillingfor4h,andthemaingenerationwereLi3A1N2andLiAl4H13.AfterdopedwithTipowder,Till2,TiF3,CeCl3andV205asacatalystrespectively,theresultsshowedthatthereactionenthalpyofLiNH2-L
6、iAlH4compositesystemreducedduringtheprocessoftemperature,andprecipitatedthedesorptionhydrogenreaction.ThehydrogenabsorbingrateandhydrogenabsorbingamountofLiNH2-Li_Am4systemforaddingTiF3.TheexerimentalresultsofLiNH2—2LiAlH4compositesystemshowedthatntheLiNH2/2LiAm4systemdesorbed8.37wt
7、.%hydrogenafterballmillingfor4h;Theexerimentalresultsof2LiNH2一LiAlI-hcompositesystemshowedthatLiNH2/LiAlH4systemdesorbed7.0wt.%hydrogenafterballmillingfor4h.Keywords:Compoundhydrogenstor醒ematerial;LINH2;LIA弛;CandysIII!匝太堂瑟±坐位論文Li=△l趟=H佳丕配位氫圭匕物籃氫性能硒究第一章緒論1.1引言能源是人類生存和發(fā)展的基礎(chǔ),并且能源的供給關(guān)系著
8、國民經(jīng)濟的可持續(xù)發(fā)展。隨著社會的發(fā)展,