Sol-gel synthesis, texture and catalytic activity of titania-silica sorbents

被引：2
|
作者：
Kouznetsova, T. F. [1 ]
Sidorenko, A. Yu [3 ]
Ivanets, A. I. [1 ]
Ignat, M. [2 ]
Sauka, Yu D. [1 ]
Samoila, P. [2 ]
机构：
[1] Inst Gen & Inorgan Chem, State Sci Inst, 9 Surganov St, Minsk 220072, BELARUS
[2] Alexandru Ioan Cuza Univ, 11 Carol I Bvd, Iasi 700506, Romania
[3] Inst Chem New Mat, State Sci Inst, 36 Fr Skaryna St, Minsk 220141, BELARUS
来源：
SN APPLIED SCIENCES | 2019年 / 1卷 / 12期
关键词：
Sol-gel; Titania-silica; MCM-41; Mesopore; Gas adsorption; Isomerization of alpha-pinene epoxide; ALPHA-PINENE OXIDE; ISOMERIZATION; ACID; FINE; ADSORPTION; CHEMICALS; EPOXIDE;
D O I：
10.1007/s42452-019-1781-9
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
Sol-gel synthesis of mesoporous titania-silicas with the structure related to Type MCM-41 is carried out. The method of nitrogen adsorption has established influence of fluoride-anion on the adsorptive and catalytic properties of titania-silica. The pore structure in titania-silica is in the form of an hexagonal array of uniform tubular channels. Asymptotic increase in a specific surface area of titania-silica catalyst with growth of F/Si ratio is shown. Both silicas and titano-silicas showed catalytic activity in the reaction of isomerization of a-pinene epoxide. The largest activity (100% conversion) and selectivity for campholenic aldehyde (57%) was shown by titanosilicate synthesized at Ti/Si = 25/75 and F/Si = 0.4.
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页数：11
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