Hydrogen production from NaBH₄ hydrolysis via Co-ZIF-9 catalyst

详细信息	查看全文 | 推荐本文 |

• 作者：Qiming Li ; Hern Kim ; ^{hernkim@mju.ac.kr}
• 关键词：ZIF-9 ; Hydrogen production ; NaBH4 ; Hydrolysis ; Catalyst
• 刊名：Fuel Processing Technology
• 出版年：2012
• 期刊代码：36_03783820
• 类别：ce
• 出版时间：August, 2012
• 卷：100
• 期：Complete
• 页码：43-48
• 文件大小：1044 K

摘要

ZIF-9, one of the zeolitic imidazolate frameworks, was synthesized via solvothermal method and the feasibility of ZIF-9 as catalyst in NaBH₄ hydrolysis for hydrogen production was firstly reported in detail. The experimental result showed that initial hydrogen generation rate of ZIF-9 catalyst is relatively slow due to the gradual formation of CoB active centers. And then the hydrogen generation rate increases rapidly after the formation of CoB. The hydrogen generation rate of ZIF-9 at 40 掳C can reach up to 3641.69 ml min^鈭?#xA0;1 g^鈭?#xA0;1(Co). It was found that the addition of NaOH can remarkably accelerate the hydrolysis rate of NaBH₄. In the cycles of ZIF-9, no obvious decrease of hydrogen production rate was found which meant that ZIF-9 catalyst maintains relatively high stability. The XRD comparison before and after the cycling reaction showed that ZIF-9 maintains its basic crystal structure and crystallinity, but long range order of ZIF-9 catalyst is altered in a certain extent.