国家/地区 中国（3）
IPC部 C（3）
IPC大类 C07（3）
IPC小类 C07C（3）
IPC C07C201/12（3）
发明人
公开年 2022（3）
申请年 2022（3）
专利权人

Preparing membrane catalytic material useful in Knoevenagel condensation reaction comprises e.g. reacting, mixing graphene oxide dispersion liquid, organic amine and activator, carrying out dialysis treatment and ultrasonic treatment, and performing vacuum filtration.

ZHANG X, PANG S, JIANG L

Preparation of p-nitrophenol comprising adding p-nitrochlorobenzene and aqueous sodium hydroxide solution, stirring, raising temperature, adding sulfuric acid solution to obtain reaction solution, separating oil layer by oil-water separation and subjecting oil layer to ultrafiltration.

CAO M, YAO X, XIONG G, HUANG Z, GUO X, CHEN Y, CHEN B

Preparation of 3-nitrophthalic acid for use in synthesis of pharmaceutical intermediates, involves adding 2,3-dimethylnitrobenzene, water, and catalyst to high-pressure reactor, introducing oxygen, and reacting under certain reaction pressure and reaction temperature.

GAO G, ZHENG G, JIANG S, GAO L, ZHANG Q