Intrinsic Kinetics of Dehydrogenation of Isobutane over K2O-CuO-Cr2O3/Al2O3 Catalyst

DOI

10.2991/icaemt-15.2015.144How to use a DOI?

Keywords

Intrinsic kinetics; isobutane; dehydrogenation; isobutene; K-Cu-Cr/Al2O3 catalyst

Abstract

The intrinsic kinetics and mechanism of direct dehydrogenation of isobutane were studied over K-Cu-Cr/Al2O3 catalyst. The experiments had been carried out in a fixed-bed reactor with eliminating the influence of both internal and external diffusion at 470-510 oC and space velocity of 2500-4000 h-1 under atmospheric pressure. Based on the Langmuir-Hinshelwood mechanism, the intrinsic kinetics models were established, and they were verified by statistical analysis. The parameters in the models were estimated by using the method of Simplex-Method (SM) combined with General Global Optimization Algorithm. The results of the kinetics modeling showed that the rate-determining step was the surface reaction process, which was the best one to describe the experimental data. The activation energy of dehydrogenation reaction was obtained. And the models can provide an important basis for the design of industrial reactor.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

Download article (PDF)

TY  - CONF
AU  - Guosong Sun
AU  - Qiuping Wang
AU  - Shiyong Huang
AU  - Qingze Huang
AU  - Huiquan Li
AU  - Haitao Liu
AU  - Xuewang Zhang
AU  - Jingshu Wang
PY  - 2015/08
DA  - 2015/08
TI  - Intrinsic Kinetics of Dehydrogenation of Isobutane over K2O-CuO-Cr2O3/Al2O3 Catalyst
BT  - Proceedings of the 2015 International Conference on Advanced Engineering Materials and Technology
PB  - Atlantis Press
SP  - 760
EP  - 767
SN  - 2352-5401
UR  - https://doi.org/10.2991/icaemt-15.2015.144
DO  - 10.2991/icaemt-15.2015.144
ID  - Sun2015/08
ER  -