摘要
用水热合成法合成了一种锆—硼—硅磷铝分子筛,通过化学分析,测定晶胞参数及用XRD、MAS NM方法进行表征,证实了锆—硼—硅原子进入了分子筛骨架,并且具有和AlPO4 5相似的结构;用IR、NH3 TPD表征方法测出了它们的酸性,测定结果表明,它具有L酸和B酸中心,以中等强度酸为主。在异构烷烃与烯烃的烷基化反应中表现出良好的催化活性,并对TMP和DHM具有高选择性,有可能替代HF成为一种环境友好的新型催化剂。
Silico-boro-Zrcronio-aluminophosphate molecular sieves(ZrBSiAlPO-5)with the similar structure to AlPO_4-5 was synthesized using the framework with Si B and Zr atoms was demonstrated by the variation in unit cell volume ,chemical analysis ,IR spctra and P MAS NMR Al MAS NMR data.IR spectra of adsorption of pyridine and temperature-programmed desorption of NH_3 indicated that ZrBSiAlPO_4-5 contained Bronsted and Lewis acid sites . ZrBSiAlPO-5 possessed a significant catalytic activity, a high selectivity for TMP and DHM.It may replace HF as circumstance amity catalyst in the alkylation of isobutane and butene.
出处
《应用化工》
CAS
CSCD
2004年第1期5-8,共4页
Applied Chemical Industry
基金
国家自然科学基金项目(29792070)
关键词
磷铝分子筛
异丁烷
丁烯
烷基化
选择性
环境友好
aluminophosphate molecular sieve
isobutane
butene
alkylation
selectivity
enviroment amity
