Tosoh Corporation

Hiroshi Okaniwa

Hidekazu Aoyama

Keisuke Tokunaga

Satoshi Yoshida

Hidenori Yamada

Megu Fukui

Provided are a pentasil-type zeolite that is less likely to adsorb water compared to conventional zeolites and has excellent strength when used as a molded body, and a method for producing the pentasil-type zeolite. A pentasil-type zeolite having a water adsorption amount of 4.0 g/100 g-zeolite or less under the conditions of 25&#xb0; C. and a relative humidity of 90% and having a major axis diameter of primary particles of from 0.2 &#x3bc;m to 4.0 &#x3bc;m, and a method for producing the pentasil-type zeolite.

Pentasil-type zeolite and production method therefor

A xenon adsorbent capable of efficiently adsorbing xenon, even at a low concentration, from a mixture gas is Provided. A xenon adsorbent comprising a zeolite having a pore size in the range of 3.5 to 5 &#x212b; and a silica alumina molar ratio in the range of 10 to 30.

Xenon adsorbent

The present invention relates to a silicoaluminophosphate represented by the following formula (1) and having a powder X-ray diffraction pattern shown in Table 1 below:(SiAlP)O&#x2003;&#x2003;(1)wherein x is the molar fraction of Si and 0.05&#x3c;x&#x2266;0.15; y is the molar fraction of Al and 0.47&#x2266;y&#x2266;0.52; z is the molar fraction of P and 0.40&#x2266;z&#x2266;0.46; and x+y+z=1; 

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Yamaguchi, Japan

Hiroshi Okaniwa