化学
催化作用
结晶度
硼
沸石
氢氧化铵
硅
结晶
钛
无机化学
铵
氢氧化物
核化学
化学工程
有机化学
结晶学
工程类
作者
Zhijin Ge,X. Li,Hui Huang,Qingming Huang,Xiaohui Chen
标识
DOI:10.1016/j.jcat.2023.115142
摘要
The pure silicon MWW were synthesized for the first time by means of a dry-gel conversion method utilizing N, N, N-trimethyl-1-adamantyl ammonium hydroxide and hexamethyleneimine as the structural directing agents. A vapor transport assisted crystallization method for obtaining complete crystallinity was developed to replace the traditional dry-gel conversion methods. TiCl4 acid solution treatment was cleverly used for the implantation of titanium in MWW. Compared with Ti-ERB-1, the Ti content of boron- free Ti-MWW is only 20% of the former, the conversion rate of 1-hexene epoxidation is 2.3 times of the former and nearly 100% of H2O2 efficiency.
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