Na_(2)SO_(4)改性Co_(3)O_(4)催化NaBH_(4)-NH_(3)BH_(3)复合物水解放氢性能研究  

Study on the catalytic performance of Na_(2)SO_(4) modified Co_(3)O_(4) for hydrogen release from NaBH_(4)-NH_(3)BH_(3) composite hydrolysis

作　　者：刘永辉 张力丹 杨茂 邓自萌 吴裕程 吴朝玲[2] 王小炼 Liu Yonghui;Zhang Lidan;Yang Mao;Deng Zimeng;Wu Yucheng;Wu Chaoling;Wang Xiaolian(School of Mechanical Engineering,Chengdu University,Chengdu 610106;School of Materials Science and Engineering,Sichuan University,Chengdu 610065)

机构地区：[1]成都大学机械工程学院,成都610106 [2]四川大学材料科学与工程学院,成都610065

出　　处：《化工新型材料》2022年第10期173-178,183,共7页New Chemical Materials

基　　金：四川省粉末冶金工程技术研究中心(SC-FMYJ2018-05);四川省应用基础研究计划(2018JY0062);成都大学研究项目(2018XZB17);成都大学2020年省级大学生创新创业训练计划项目(S202011079052)。

摘　　要：NaBH_(4)-NH_(3)BH_(3)复合物(xSB-AB,x=2,4,6,8)具有比单体更好的水解放氢性能,但在温和条件下的产氢效率仍然不够理想。将Na_(2)SO_(4)改性的Co_(3)O_(4)用于催化NaBH_(4)-NH_(3)BH_(3)复合物水解,发现它表现出比纯Co_(3)O_(4)更为优异的催化性能。Na_(2)SO_(4)改性的Co_(3)O_(4)催化2NaBH_(4)-NH_(3)BH_(3)在40℃水解时,8min的产氢量达到了2430mL/g。结果表明:Na_(2)SO_(4)本身对NaBH_(4)-NH_(3)BH_(3)复合物水解无催化作用,但可能有利于Co_(3)O_(4)原位转化为具有高催化活性的Co-B合金,从而提升NaBH_(4)-NH_(3)BH_(3)复合物的放氢性能。NaBH_(4)-NH_(3)BH_(3)composite(xSB-AB,x=2,4,6,8)has better hydrolysis performance than its monomer,but the hydrogen production efficiency under mild conditions is still not ideal.Co_(3)O_(4) modified by Na_(2)SO_(4)was used to catalyze the hydrolysis of NaBH_(4)-NH_(3)BH_(3) composite.It was found that it exhibited better catalytic performance than pure Co_(3)O_(4).Typically,the hydrogen yield of 2NaBH_(4)-NH_(3)BH_(3)catalyzed by Na_(2)SO_(4) modified Co_(3)O_(4) at 40℃for 8min can reach 2430mL/g.Our analysis shown that Na_(2)SO_(4)had no catalytic effect on the hydrolysis of NaBH_(4)-NH_(3)BH_(3)composite,but it may facilitate the in-situ conversion of Co_(3)O_(4)to Co-B alloy with high catalytic activity,thereby improving the hydrogen release performance of NaBH_(4)-NH_(3)BH_(3)composite.

关 键 词：NaBH_(4)-NH_(3)BH_(3) Na_(2)SO_(4) Co_(3)O_(4) 水解 

分 类 号：TB331[一般工业技术—材料科学与工程] TQ116.2[化学工程—无机化工]