CAJ | 학술논문

以1,2-环氧环己烷水解为主要探针反应研究了钛硅分子筛HTS-1的表面酸催化性能.结果表明,HTS-1表面酸中心具有较高的催化活性,它的扩散性能和溶剂极性对反应活性的影响很大.还采用吸附吡啶的红外光谱和紫外光谱对HTS-1催化剂表面酸性进行了定性和定量分析.这些结果不仅拓展了HTS-1在精细有机合成中的应用,而且为有效提高HTS-1的催化氧化性能提供了依据.
이1,2-배양배기완수해위주요탐침반응연구료태규분자사HTS-1적표면산최화성능.결과표명,HTS-1표면산중심구유교고적최화활성,타적확산성능화용제겁성대반응활성적영향흔대.환채용흡부필정적홍외광보화자외광보대HTS-1최화제표면산성진행료정성화정량분석.저사결과불부탁전료HTS-1재정세유궤합성중적응용,이차위유효제고HTS-1적최화양화성능제공료의거.
Hydrolysis of 1,2-epoxycyclohexane as a probe reaction was employed to investigate the surface acid properties of tita-nium-silicate zeolite (HTS-1) catalyst under various conditions. The results indicated that the hydrolysis reaction was mainly affected by solvent polarity and diffusion limitation, and HTS-! showed outstanding catalytic performance for this reaction. Quantitative and qualitative analysis of acidity and acid sites by means of pyridine adsorption was performed using UV-Vis and FT-IR spectroscopy, respectively, which can distinguish Breasted acidic sites and Lewis acidic sites and to calculate precisely the surface acid amount of HTS-1. These results not only expand the applications of HTS- 1 in fine chemical synthesis but also provide a basis for effectively improving the catalytic performance of HTS- 1 in oxidation.