Kinetics of solid acid catalyzed 1-octene reactions with TiO2 in sub- and supercritical water

被引：14

作者：

Akizuki, Makoto ^{[1
]}

Tomita, Kengo ^{[2
]}

Oshima, Yoshito ^{[1
]}

机构：

[1] Univ Tokyo, Grad Sch Frontier Sci, Dept Environm Syst, Chiba 2778563, Japan

[2] Osaka Univ, Dept Adm Safety & Hyg, Suita, Osaka 5650871, Japan

来源：

JOURNAL OF SUPERCRITICAL FLUIDS | 2011年 / 56卷 / 01期

关键词：

Subcritical water; Supercritical water; Kinetics; 1-Octene; Solid acid catalyst; HOT COMPRESSED WATER; ION PRODUCT; METAL-OXIDE; DEHYDRATION; FORMULATION; PROPYLENE; SUBSTANCE; HYDRATION;

D O I：

10.1016/j.supflu.2010.11.015

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Acid catalyzed reactions of 1-octene on TiO2 in sub- and supercritical water were investigated (T= 250-450 degrees C, P=11-33 MPa). The main products were 2-octene and 2-octanol. Additionally, other liner C-8 alkenes and liner secondary C-8 alcohols were produced as by-products. Through kinetic analysis, acid catalyzed reactions can divide into the reaction catalyzed by Lewis acidic sites on TiO2 and the reaction catalyzed by protons produced by the dissociation of water molecules. Each type of the reaction is affected by water density or ionic product of water, respectively, therefore, reaction mechanism changes with temperature and pressure. From the contribution of each reaction type, the temperature dependence of cis/trans ratio of produced 2-octene could also be explained. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：14 / 20

页数：7

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