摘要
采用甲醇合成催化剂C207和分子筛HZSM-5混合制得CO2加氢合成二甲醚双功能催化剂,并在微型固定床反应装置上进行了活性评价。考察了反应温度、压力、氢碳摩尔比、空速等工艺条件对催化反应的影响。结果表明,温度对催化剂活性影响显著,适当提高温度有利于提高反应速率,适宜的温度操作范围260～270℃,增加压力,提高氢碳摩尔比有利于提高CO2转化率、二甲醚收率;适宜的空速范围1500～3000h-1。
Methanol synthesis catalyst C207 and dehydration catalyst HZSM-5 were mixed to prepare bifunctional catalyst for dimethyl ether synthesis from CO_2 hydrogenation. Catalytic activities were evaluated on micro fixed-bed reactor. Effects of temperature, pressure, H_2/CO_2 mole ratio, space velocity on reaction were studied. Results showed that temperature affects catalytic activity markedly , the higher temperature is beneficial to improve reaction rate and suitable temperature is 260～270 ℃; the higher pressure and H_2/CO_2 ratio are contributable to improve CO_2 conversion and DME yield; suitable space velocity is (1 500)～(3 000) h^(-1).
出处
《南京工业大学学报（自然科学版）》
CAS
2004年第3期89-93,共5页
Journal of Nanjing Tech University(Natural Science Edition)
基金
扬子石油化工有限公司资助
