Ube Industries, Inc.

Noriaki Manada

Masato Murakami

Toshio Kurafuji

Yasushi Yamamoto

Koji Abe

Shuji Tanaka

Keigo Nishihira

Masaoki Matsuda

Shinichi Furusaki

Yuki Nishida

Hisao Yamashina

An ester compound, for example, carbonic acid ester or succinic acid ester, is produced by catalytically reacting, in gas phase, carbon monoxide with a nitrous acid ester and optionally an olefin in the presence of a catalyst and in the presence of a chlorine-containing substance, bringing the reaction product-containing mixed gas into contact with a solid catalyst such as activated carbon or inorganic oxide to reduce the content of the chlorine-containing substance, cool-condensing the resultant mixed gas, and collecting the target ester compound from the condensed liquid.

Method of producing an ester compound

Process for producing a carbonic acid diester

A carbonic acid diester is produced, at a high reaction rate with a high selectivity and stability, by catalytically reacting carbon monoxide with a nitrous acid ester, preferably in a gas phase, in the presence of a solid catalyst composed of a solid carrier and a catalytic solid material deposited on the carrier and comprising: (1) a first catalyst component comprising at least one member selected from the group consisting of platinum group metals and compounds thereof; (2) a second catalyst component comprising at least one member selected from the group consisting of lanthanide group metals and compounds thereof; and collecting the resultant carbonic acid diester from a reaction mixture discharged from the catalytic reaction step.

Method of producing carbonic acid diester

There is disclosed a novel process for the preparation of an ester of formic acid which comprises subjecting hydrogen, carbon monoxide and an ester of nitrous acid to a catalytic vapor phase reaction in the presence of a platinum group metal or a salt thereof. The product obtained by the process according to the present invention does not substantially contain water and free formic acid. The ester of formic acid formed by the process according to the present invention can be separated and purified in a simple manner, e.g., by conventional distillation procedure.

Process for the preparation of an ester of formic acid

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Ube, Japan

Noriaki Manada