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1. (WO2017151361) ALKANE DEHYDROGENATION CATALYST REGENERATION BY LOW CHLORINE CONTENT OXYCHLORINATION

Pub. No.:    WO/2017/151361    International Application No.:    PCT/US2017/018902
Publication Date: Sat Sep 09 01:59:59 CEST 2017 International Filing Date: Thu Feb 23 00:59:59 CET 2017
IPC: B01J 38/44
B01J 38/34
B01J 23/62
B01J 23/08
C07C 5/32
B01J 38/18
B01J 38/30
B01J 23/92
B01J 23/96
Applicants: DOW GLOBAL TECHNOLOGIES LLC
Inventors: MALEK, Andrzej M.
BARTON, David G.
LUO, Lin
Title: ALKANE DEHYDROGENATION CATALYST REGENERATION BY LOW CHLORINE CONTENT OXYCHLORINATION
Abstract:
The present disclosure provides an air-soak containing regeneration process reducing its time. The process includes (i) removing surface carbon species from a gallium-based alkane dehydrogenation catalyst in a combustion process in the presence of a fuel gas; (ii) conditioning the gallium-based alkane dehydrogenation catalyst after (i) in air-soak treatment at a temperature of 660 °C to 850 °C with (iii) a flow of oxygen-containing gas having (iv) 0.1 to 100 parts per million by volume (ppmv) of a chlorine source selected from chlorine, a chlorine compound or a combination thereof; and achieving a predetermined alkane conversion percentage for the gallium-based alkane dehydrogenation catalyst undergoing the air-soak containing regeneration process using (i) through (iv) 10 % to 50 % sooner in air-soak treatment than that required to achieve the same predetermined alkane conversion percentage for the gallium-based alkane dehydrogenation catalyst undergoing the air-soak containing regeneration process using (i) through (iii), but without (iv).