国家/地区 中国（2）
IPC部 C（2）
IPC大类 C07（2）
IPC小类 C07D（2）
IPC
发明人 LIU Y（2）
公开年 2023（2）
申请年 2021（2）
专利权人 CHINA PETROL.（2）

Catalyst for producing pyromellitic dianhydride from durene comprises carrier and active component loaded on carrier, where active component contains vanadium oxide, optionally phosphorus compounds, cesium compounds, auxiliary agent, heat conducting material and titanium dioxide.

ZHANG Z, ZHANG D, SHI H, YUAN B, LIU Y, AN X

New Janus-type nano graphene oxide for viscosity reducing agent used in oil field applications, has one side with dimensional sheet structure, grafted with hydrophobic alkylamine, and other side grafted with hydrophobic aromatic amine, where nano graphene oxide has specific water contact angle.

BI W, WANG Y, LIU Y, GUAN X, MA H, FAN L, XU Y, XU M, WANG T, ZHANG L