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Oxidative coupling of methane over CaO catalysts promoted with alkali and alkaline earth oxides

✍ Scribed by Takahito Nishiyama; Tohru Watanabe; Ken-ichi Aika

Publisher
Elsevier Science
Year
1990
Tongue
English
Weight
398 KB
Volume
6
Category
Article
ISSN
0920-5861

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✦ Synopsis

CaO catalysts promoted with various elements

were examined systematplly for the oxidative coupling of methane.

10 mol% Li+-CaO and 10 mol% Ba -CaO gave high C2 yield (23 to 26% at 1023 to 1073 K for 10% Li+-CaO) under CH4 and 02 partral pressure of 2.8 an $+1.4 kPa respectively.

A three components catalyst, 10 mol% Li+-5 mol% Ba -CaO, was also found to be an effective catalyst,

given that -the reaction temperature to give the maximum C2 yield was lower than those for the two components catalysts under the same reaction condition.

Quenching the flow down stream the reactor improved C2 yield.

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