石油炼制与化工
石油煉製與化工
석유련제여화공
PETROLEUM PROCESSING AND PETROCHEMICALS
2015年
6期
36-40
,共5页
钛硅分子筛%壳层%催化氧化%制备%表征
鈦硅分子篩%殼層%催化氧化%製備%錶徵
태규분자사%각층%최화양화%제비%표정
titanosilicate sieve%shell%catalytic oxidation%preparation%characterization
采用两步水热晶化方法,以有机硅源和钛源制备了壳层钛硅分子筛 RTS,利用多种分析表征和评价手段对 RTS 和常规钛硅分子筛 TS-1的物化性质及催化氧化性能进行了分析表征和评价。结果表明:所制备的 RTS 物相为 MFI 结构,活性钛物种主要分布在颗粒的表层,为壳层钛硅分子筛;RTS 在苯酚羟基化制备苯二酚的探针反应中表现出与 TS-1相当的催化氧化活性和目的产物苯二酚的选择性,而且可重复使用,性能优于 TS-1。
採用兩步水熱晶化方法,以有機硅源和鈦源製備瞭殼層鈦硅分子篩 RTS,利用多種分析錶徵和評價手段對 RTS 和常規鈦硅分子篩 TS-1的物化性質及催化氧化性能進行瞭分析錶徵和評價。結果錶明:所製備的 RTS 物相為 MFI 結構,活性鈦物種主要分佈在顆粒的錶層,為殼層鈦硅分子篩;RTS 在苯酚羥基化製備苯二酚的探針反應中錶現齣與 TS-1相噹的催化氧化活性和目的產物苯二酚的選擇性,而且可重複使用,性能優于 TS-1。
채용량보수열정화방법,이유궤규원화태원제비료각층태규분자사 RTS,이용다충분석표정화평개수단대 RTS 화상규태규분자사 TS-1적물화성질급최화양화성능진행료분석표정화평개。결과표명:소제비적 RTS 물상위 MFI 결구,활성태물충주요분포재과립적표층,위각층태규분자사;RTS 재분분간기화제비분이분적탐침반응중표현출여 TS-1상당적최화양화활성화목적산물분이분적선택성,이차가중복사용,성능우우 TS-1。
With organic silicon and titanium,a new shell-type titanosilicate sieve (RTS)was synthe-sized by two step hydrothermal crystallization method. The physical properties and catalytic oxidation performance of RTS was characterized by various analytic instruments and phenol hydroxylation reac-tion. The results show that RTS has MFI topological structure,and the Ti species in RTS were mainly on the shell part of particles. The catalytic performance results indicate that RTS gives the same catalyt-ic oxidation activity and benzene diol selectivity as that of TS-1,and the reusable performance is better than that of TS-1.