摘要
采用酸-碱交替沉淀法制备了一种新型的低压甲醇合成催化剂。研究了催化剂组成的影响。当Al和Zr含量固定,随着Cu/Zn摩尔比的增加,催化剂活性先升高后下降,当Cu/Zn摩尔比为1时,活性最高。XRD结果表明,Cu/Zn摩尔比为1时制备的催化剂CuO与ZnO组分间相互均匀分散程度最大。Zr较明显地提高催化剂的活性和耐热性,Mn对催化剂的耐热性提高有一定的作用,La和Ce对提高催化剂活性的作用不大。
A new catalyst for methanol synthesis was prepared by altemant precipitation between acid and alkali. It showed that the activity of catalysts increased first and then decreased with increasing Cu/Zn ratio, among which the maximum appeared at Cu/Zn = 1. From XRD pattern it showed that the characteristic peaks of CuO and ZnO of the catalyst that Cu/Zn ratio was 1 were the most dispersed. Addition of Zr could increase the activity and thermal stability of catalyst obviously. Addition of Mn could increase the thermal stability of the catalyst. And addition of La and Ce could not influence the activity much.
出处
《现代化工》
EI
CAS
CSCD
北大核心
2006年第3期46-49,共4页
Modern Chemical Industry
关键词
甲醇合成
铜基催化剂
酸-碱交替沉淀法
Cu/Zn摩尔比
助催化剂
methanol synthesis
copper-based catalysts
precipitation method of alteration between acid and alkali
Cu/Zn ratio
promoter
