国家/地区 中国（2）
IPC部 B（2）
IPC大类 B01（2）
IPC小类 B01J（2）
IPC B01J035/08（2）
发明人
公开年 2021（2）
申请年 2019（2） 
专利权人

Catalyst used for producing methacrylic acid, has core-shell structure with double-shell layer whose inner shell layer comprises active component and water-absorbing metal oxide, and outer shell layer comprises inorganic carbon material, where catalyst core is inert ceramic balls.

JI Y, HU J, LIU C, YI G, WAN Y, YU H, YANG Z, SUN K, LI Y

Preparing glycol by hydration of alkylene oxide, comprises contacting alkylene oxide and water with composite ion exchange resin catalyst under hydration reaction condition.

JIN M, YANG W, HE W