October 22, 2012

CAS databases provide millions of journal article references from more than 10,000 major scientific journals worldwide, patent and patent family references from 63 patent authorities around the world, and other reputable web sources.

The following patent record is from the CAplusSM database.


Patent Number: US 8278237
Title: Catalyst for aromatization of lower hydrocarbons and process for production of aromatic compounds
Inventor(s): Yamada, Shinichi; Yamada, Tomohiro; Ogawa, Yuji; Akiyama, Hirokazu;  Hatagishi, Takuya
Patent Assignee(s): Meidensha Corporation, Japan
Source: PCT Int. Appl., 38pp. CODEN: PIXXD2
Language: Japanese

A catalyst for the aromatization of lower hydrocarbons having improved lifetime stability of activity on the conversion of methane, formation rate of benzene, formation rate of naphthalene, and total formation rate of benzene, toluene and xylene, is prepared by supporting Mo and Cu on a metallosilicate support and then firing the obtained intermediate. The production of aromatic compds. can be conducted by bringing a reactant gas containing a lower hydrocarbon and CO2 into contact with the catalyst. The catalyst was prepared preferably by modifying a zeolite consisting of a metallosilicate with a silane compound which has a mol. size larger than the pore size of the zeolite and bears both an amino group selectively reactive with a Bronsted acid site of the zeolite and a linear hydrocarbon group, and then supporting Mo and Cu on the modified zeolite. Preferably, the amount of Mo supported on the carrier is 2 - 12% based on the whole catalyst after firing, while the Cu:Mo mol ratio is 0.01 - 0.8.

Please note:  Abstracts for patent records in CAplus are routinely enhanced to better describe the claimed invention. In this example, CAS enhanced the abstract.

 View the full-text here.

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