Acid Activation of Montmorillonite as a Way of Controlling Its Catalytic Behavior in the Synthesis of Solketal from Glycerol and Acetone

被引：3

作者：

Kovalenko, O. N. ^{[1
]}

Simentsova, I. I. ^{[1
]}

Panchenko, V. N. ^{[1
,2
]}

Timofeeva, M. N. ^{[1
,2
]}

机构：

[1] Russian Acad Sci, Boreskov Inst Catalysis, Siberian Branch, Novosibirsk 630090, Russia

[2] Novosibirsk State Tech Univ NETI, Novosibirsk 630087, Russia

来源：

CATALYSIS IN INDUSTRY | 2022年 / 14卷 / 02期

关键词：

montmorillonite; acidic activation; cyclocondensation; glycerol; acetone; solketal; TREATED MONTMORILLONITE; KETAL SOLKETAL; CLAY; CONVERSION; REACTIVITY;

D O I：

10.1134/S2070050422020040

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The effect of acid activation with 0.125-0.5 M H2SO4, HCl, and HNO3 on the physicochemical properties and catalytic performance of natural clay (the Mukhartalinskii deposit) containing 95% montmorillonite (MM) was investigated in the synthesis of solketal [(2,2-dimethyl 1,3-dioxolan-4-yl)methanol] from glycerol and acetone. The reaction rate and selectivity toward solketal are shown to depend on the type and concentration of acid. Both the yield of solketal and the reaction rate rose with increasing acid concentration, which correlates with the increase in the number of Bronsted acid sites. The efficiency of the system was found to diminish in the order MM/HCl > MM/HNO3 > MM/H2SO4 as the surface acidity decreased.

引用

页码：208 / 217

页数：10

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