摘要
综述了近10年应用于固定床工艺的甲醇一步法制二甲氧基甲烷金属催化剂与杂多酸催化剂的研究成果。钌基催化剂虽起活温度低,但性能欠佳、价格昂贵;铼基催化剂不仅有前述问题,且操作温度高、易挥发流失、稳定性差;铁钼催化剂虽活性较好,但选择性较差,需匹配适宜的工况条件;杂多酸催化剂使用温度高、不稳定易分解、性能较差;钒基催化剂操作温度较低、结构稳定及性能良好,是最具工业化前景的催化剂。认为提升钒催化剂的活性与选择性、研究其稳定性及开发适宜的反应工艺是下阶段研究工作的重点,催化剂性能的不断突破和技术经济性的持续提升将助推该技术实现产业化。
The researches on the metal catalysts and heteropolyacid catalysts applied in fixed bed process for one-step synthesis of dimethoxymethane （DMM） from methanol in recent 10 years are reviewed. Although Ru-based catalysts demonstrate low activation temperature, they are expensive and perform bad. Re-based catalysts not only exposed the problems of Ru-based catalysts, but also have high operating temperature, volatile loss and poor stability. Fe-Mo catalysts show good activity but poor selectivity, needing to match appropriate working conditions. Heteropoly acid catalysts show poor performance. They are unstable and easy to decompose, and require high reaction temperature. V-based catalysts are the most promising catalysts for industrialization due to their lower reaction temperature, better structural stability and excellent catalytic performance. It is believed that improving the activity and selectivity of V-based catalysts, studying their stability and developing appropriate reaction processes should be the key points for next stage research works. The constant breakthrough in catalyst performance and continuous improvement of technical economy will boost the industrialization of this technology.
作者
程金燮
王科
胡志彪
林荆
王熙庭
谢光全
陈鹏
CHENG Jin-xie;WANG Ke;HU Zhi-biao;LIN Jin;WANG Xi-ting;XIE Guang-quan;CHEN Peng(National Engineering Research Center for C1 Chemistry,State Key Laboratory of Industrial Vent Gas Reuse,Southwest Researchand Design Institute of Chemical Industry Co.,Ltd.,Chengdu 610225,China)
出处
《天然气化工—C1化学与化工》
CAS
CSCD
北大核心
2018年第3期95-103,共9页
Natural Gas Chemical Industry
关键词
二甲氧基甲烷
直接合成
催化剂
甲醇
氧化缩合
dimethoxymethane
direct synthesis
catalyst
methanol
oxidative condensation
