国家/地区 中国（3）
IPC部 B（3）
IPC大类 B01（3） C07（3）
IPC小类 B01J（3）
IPC C07C015/08（3）
发明人 FANG X（2） LIU X（2） PAN Y（2）
XIE P（2） YAN C（2）
公开年 2023（3）
申请年 2023（2） 
专利权人 WEIFANG HONG.（2）

Preparing high-purity m-xylene comprises e.g. contacting the mixed xylene with the adsorbent, discharging the raffinate, then contacting the desorbent with the adsorbed adsorbent, mixing the first part of m-xylene with the second part of m-xylene, cooling, crystallizing, and washing.

XIE P, YAN C, MENG L, FANG X, PAN Y, LI Z, XU X, LIU X

Catalyst used in preparation of toluene and xylene by alkylation of benzene and methanol, comprises graphene oxide-containing molecular sieves and metal oxides, where morphology of catalyst is multi-stage porous column.

ZOU W, REN S

Producing o-xylene comprises e.g. catalyzing 3-nitro-o-xylene by hydrogenation catalyst to generate 3-amino-o-xylene, hydrogenating into o-xylene and ammonia gas under catalytic action of hydrogen decomposing catalyst, absorbing ammonia gas by acid solution, and obtaining high-purity o-xylene.

JIA X, GAO X, FANG X, PAN Y, LIU X, XIE P, XUN Q, YAN C