摘要
将一系列自制天然丝光沸石催化剂与目前国内唯一工业化的A 6催化剂及氢型合成丝光沸石催化剂进行比较,筛选出催化效果较好的催化剂NaHM,并对其进行工艺条件优化,同时考察了NaHM用于甲胺合成反应的稳定性。结果表明天然丝光沸石催化剂具有更好的二甲胺选择性;金属离子改进可强化沸石的择形效果,但同时降低甲醇转化率。改性催化剂中NaHM效果最好。该催化剂具有较好的活性稳定性,适宜的工艺条件为:t=390℃、τ(LHSV)=1 93h-1、n(N)/n(C)=1 8。此时其甲醇转化率为93 9%,二甲胺选择性为38 5%。
The performance to the home made catalysts of natural mordenits,synthetic mordenite and domestic commercial productA 6 in the synthesis of methyla mines was compared,NaHM was selected because of its good catalytic performance and the optimal methodology condition is confirmed .The results showed that the home made catalysts have a high dimethylamine selectivity than others.Among them ,NaHM is the best of the conversion of methanolon a carbon basis is 93 9% and the selectivity to dimethylamine is38 3%at673 Kwherein the single pass yield,when the methodology con dition is:t=390℃、τ(LHSV) =1 93h-1 、n(N) /n(C) =1 8。
出处
《南京工业大学学报（自然科学版）》
CAS
2004年第2期43-47,共5页
Journal of Nanjing Tech University(Natural Science Edition)
