Rogers Kyle A, Zheng Ying
Department of Chemical Engineering, University of New Brunswick, Fredericton, NB, E3B 5A3, Canada.
School of Engineering, University of Edinburgh, The King's Buildings, Edinburgh, EH9 3DW, UK.
ChemSusChem. 2016 Jul 21;9(14):1750-72. doi: 10.1002/cssc.201600144. Epub 2016 Jul 7.
Research development of processes for refining bio-oils is becoming increasingly popular. One issue that these processes possess is their high requirement for H2 gas. In response, researchers must develop catalysts that perform deoxygenation while minimizing H2 consumption-selective deoxygenation. Unlike traditional deoxygenation processes, selective deoxygenation reactions and catalysts represent an information gap that, prior to this publication, has yet to be reviewed. This review addresses the gap by providing both a summary of recent research developments and insight into future developments of new catalytic materials. Bifunctional catalysts containing a combination of oxophilicity and an active metal phase appear to be the most beneficial for selective deoxygenation processes in a H2 -modest environment. It is important that catalysts have a supply of disassociated hydrogen, because without such, activity and stability will suffer. The authors recommend to maximize the use of internally available hydrogen in bio-fuel, which may be the only viable approach for deoxygenation if external H2 gas is limited. This would be possible through the development of catalysts that promote both the water-gas-shift and deoxygenation reactions.
生物油精炼工艺的研究发展正变得越来越普遍。这些工艺存在的一个问题是它们对氢气的高需求。作为回应，研究人员必须开发出在使氢气消耗最小化的同时进行脱氧的催化剂——选择性脱氧。与传统的脱氧工艺不同，选择性脱氧反应和催化剂存在信息空白，在本出版物之前，尚未有相关综述。本综述通过总结近期研究进展并洞察新型催化材料的未来发展来填补这一空白。在适度氢气环境中，兼具亲氧性和活性金属相的双功能催化剂似乎对选择性脱氧工艺最为有益。催化剂有解离氢的供应很重要，因为没有它，活性和稳定性都会受到影响。作者建议最大限度地利用生物燃料中内部可用的氢，如果外部氢气有限，这可能是脱氧的唯一可行方法。这可以通过开发促进水煤气变换反应和脱氧反应的催化剂来实现。
