Catalyst – solid sorbent – or support therefor: product or process – Zeolite or clay – including gallium analogs – And additional al or si containing component
Patent
1998-10-22
2000-11-14
Dunn, Tom
Catalyst, solid sorbent, or support therefor: product or process
Zeolite or clay, including gallium analogs
And additional al or si containing component
502 66, 502 67, 502 71, 502 77, 502 78, 502 79, B01J 2906
Patent
active
061470236
ABSTRACT:
An HC-adsorbent capable of adsorbing various kinds of hydrocarbon including lower and higher hydrocarbon, of which the adsorbable amount per unit volume is large, and which exhibits excellent durability at elevated temperatures. The HC-adsorbent is composed of a first zeolite of ZSM-5 of which the silica/alumina (SiO.sub.2 /Al.sub.2 O.sub.3) mole-ratio is 500 or more, and a second zeolite of Y-type zeolite of which the silica/alumina (SiO.sub.2 /Al.sub.2 O.sub.3) mole-ratio is 200 or more. The second zeolite mainly adsorbs higher hydrocarbon while the first zeolite mainly adsorbs lower hydrocarbon, thus enabling adsorption of many kinds of hydrocarbon.
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Hirayama Hiroshi
Kanazawa Takaaki
Sakurai Kazuhiro
Dunn Tom
Toyota Jidosha & Kabushiki Kaisha
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