Mitsubishi Kasei Corporation

Nikken Chemicals Co., Ltd.

Yoshikazu Ohshima

Akio Tamaru

Hidekichi Hashimoto

Yoshimitsu Tanaka

Koushi Honda

Tetsuo Yamada

A method for drying erythritol crystals having a moisture content of from 1 to 10% by weight to reduce to the moisture content of 0.15% by weight or below, which comprises drying under fluidized state wherein a temperature of a gas to be used in the fluidized drying is controlled within a range of from 10.degree. to 60.degree. C. at least until the moisture content of said crystals is reduced to 0.5% by weight or below. The moisture content of erythritol crystals (moisture content: 1 to 10% by weight) can be highly efficiently reduced to 0.15% by weight or below in a stable form without deteriorating the crystalline properties and form by fluidized drying said erythritol crystals with the use of a gas flow of a relatively low specific temperature.

Method for drying erythritol crystals

A catalyst for conversion of carbon monoxide in water gas reaction, which comprises iron oxide, chromium oxide and magnesium oxide in the proportions of the from 40 to 85% by weight computed as Fe.sub.2 O.sub.3, from 12 to 45% by weight computed as Cr.sub.2 O.sub.3 and from 3 to 15% by weight computed as MgO, respectively.

Catalyst for conversion of carbon monoxide

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Fukuoka, Japan

Yoshikazu Ohshima