低碳化学与化工2024，Vol.49Issue(1)：12-24,13.DOI:10.12434/j.issn.2097-2547.20220385
固定床甲醇氧化制甲醛铁钼催化剂的应用与研究进展
Application and research progress of iron-molybdenum catalysts for methanol oxidation to formaldehyde in fixed bed
程金燮 1黄宏 1王华 1丁明月 1姚佩 1康志强 1杜勇 1赵安民1
作者信息
- 1. 西南化工研究设计院有限公司 国家碳一化学工程技术研究中心,工业排放气综合利用国家重点实验室,四川 成都 610225
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摘要
Abstract
To break through the"neck jamming"technology of iron-molybdenum formaldehyde catalysts and realize its localization and widespread application,the research progress of industrial application,laboratory preparation,reaction and deactivation mechanism of iron-molybdenum formaldehyde catalysts at home and abroad was reviewed.It is found that foreign iron-molybdenum formaldehyde catalysts achieve a formaldehyde yield of 93.3%after 70 years of industrial application and improvement,while domestic catalysts don't realize large-scale import substitution yet after industrial trials.Co-precipitation method is the mainstream method for preparing the catalyst,and the structure and performance of the catalyst will be affected by n(Mo)∶n(Fe),additives,precipitation temperature,pH value,stirring speed,aging time and calcination temperature.The reaction of methanol oxidation to formaldehyde on the catalyst followed redox mechanism,in which lattice oxygen plays a role of oxidizing active site,and the rate-determining step of the reaction is may be methoxy generation,methoxy dehydrogenation,or lattice oxygen transfer process,and the loss of molybdenum volatilization during reaction is an important reason for catalyst deactivation.It is pointed out that it's necessary at home to strengthen the research on iron-molybdenum formaldehyde catalysts formation mechanism,the influence law of preparation process on structure and performance of the catalyst,and the catalytic reaction and deactivation mechanism aimed at issues arising from industrial trials,so as to improve the catalyst performance,especially the catalyst stability.关键词
催化剂/铁钼法/甲醛/甲醇氧化Key words
catalyst/iron-molybdenum process/formaldehyde/methanol oxidation分类
化学化工引用本文复制引用
程金燮,黄宏,王华,丁明月,姚佩,康志强,杜勇,赵安民..固定床甲醇氧化制甲醛铁钼催化剂的应用与研究进展[J].低碳化学与化工,2024,49(1):12-24,13.
