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Epoxidation of 1-hexene with hydrogen peroxide over nitrogen-incorporated TS-1 zeolite

Paper ID Volume ID Publish Year Pages File Format Full-Text
50190 46783 2014 4 PDF Available
Title
Epoxidation of 1-hexene with hydrogen peroxide over nitrogen-incorporated TS-1 zeolite
Abstract

•Epoxidation of 1-hexene with dilute H2O2 over nitrogen-incorporated TS-1 was studied.•The catalytic activity of TS-1 for 1-hexene epoxidation was enhanced by nitridation.•A new TiOOH intermediate with double hydrogen bonds was proposed.

Nitrogen-incorporated TS-1 zeolite (N-TS-1) was synthesized by direct calcining the as-synthesized TS-1 powder in NH3 flow at high temperature. Epoxidation of 1-hexene with dilute H2O2 over N-TS-1 was studied. The results showed that the catalytic activity and selectivity of TS-1 were greatly improved upon post-synthetic nitridation. A new TiOOH intermediate with double hydrogen bonds was proposed. The new intermediate was more stable due to the presence of another hydrogen bond, which was formed between the stable nitrogen species and the H atom of the conventional five-member-ring intermediate, thereby improving the epoxidation activity.

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Keywords
Nitrogen-incorporated TS-1; Hydrogen bond; Epoxidation of 1-hexene
First Page Preview
Epoxidation of 1-hexene with hydrogen peroxide over nitrogen-incorporated TS-1 zeolite
Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 46, 10 February 2014, Pages 224–227
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis