国家/地区 中国（3）
IPC部 B（3）
IPC大类 B01（3） C07（3）
IPC小类 B01J（3）
IPC B01J023/745（3）
发明人
公开年 2018（3）
申请年 2017（2） 
专利权人

Preparation of catalyst used in catalytic hydrogenation of nitro aromatic compound e.g. nitrobenzene for preparing arylamine compound, involves mixing prepared nitrogen-doped graphene in divalent iron solution, drying and pyrolyzing.

WEI Z, HOU Y, XU Z

Preparing benzotriazole ultraviolet absorbing agent involves reacting azo derivative (I) and alkali, dissolving in solvent, adding raw material solution into reaction device, adding ferric oxide/graphene catalyst to raw material liquid.

LI H, LIU G

Preparation of catalyst with graphene oxide by uniformly dispersing graphene oxide into ethanol, ultrasonically stirring to form graphene oxide suspension, grinding ferroferric oxide, adding diluted nitric acid and stirring.

ZHU Y, SHAO R