CATALYST AND METHOD OF PRODUCING ALKYLENE OXIDE

CATALYST AND METHOD OF PRODUCING ALKYLENE OXIDE

PROBLEM TO BE SOLVED: To provide a catalyst for producing alkylene oxide, the service life of which can be improved.SOLUTION: A catalyst for producing alkylene oxide contains a carrier and a catalyst component to be deposited on the carrier. The carrier contains α-alumina as a main component and has...

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Hauptverfasser: HASHIMOTO TAKAAKI, SUGIO NOBUFUMI, SENTO JUN, OBAYASHI NOZOMI, KONDO HISAO
Format: Patent
Sprache:eng ; jpn
Schlagworte:
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY
CHEMISTRY
HETEROCYCLIC COMPOUNDS
METALLURGY
ORGANIC CHEMISTRY
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
THEIR RELEVANT APPARATUS
TRANSPORTING
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Zusammenfassung:PROBLEM TO BE SOLVED: To provide a catalyst for producing alkylene oxide, the service life of which can be improved.SOLUTION: A catalyst for producing alkylene oxide contains a carrier and a catalyst component to be deposited on the carrier. The carrier contains α-alumina as a main component and has: the external surface coated with amorphous silica; and pores each having the surface coated with the amorphous silica. The coating amount of the amorphous silica (in terms of Si) is 2×10to 2×10g-Si/g-carrier and pores each having 50 μm or larger pore diameter account for 15-40% of the total pore volume. 【課題】触媒寿命を向上できるアルキレンオキシド製造用触媒を提供する。【解決手段】担体と、前記担体に担持されてなる触媒成分と、を含む、アルキレンオキシド製造用触媒であって、前記担体は、α−アルミナを主成分として含み、外表面および細孔表面が非晶質シリカで被覆され、当該非晶質シリカの被覆量（Ｓｉ換算）は、１ｇ担体当たり、２?１０−４〜２?１０−２ｇ−Ｓｉ／ｇ担体であり、かつ細孔直径が５０μｍ以上の細孔を全細孔容積の１５〜４０％の割合で有する、触媒。【選択図】なし