国家/地区 中国（5）
IPC部 B（5）
IPC大类 B01（5） C07（5）
IPC小类 B01J（5）
IPC C07D201/04（3） C07D223/10（3） B01J021/18（2）
B01J029/40（2）
发明人 DAI Y（5）
公开年 2023（5）
申请年 2022（5）
专利权人 JIANGSU YANG.（4）

Preparing composite silicon molecular sieve catalyst useful in preparing caprolactam, comprises e.g. mixing organosilicon compound, quaternary ammonium template and water, hydrolysizing, distilling, crystallizing, adjusting to neutral, performing first calcination, and adding graphene oxide.

YAN X, DAI Y, HAN M, KONG M, XU L, DING K, WANG G, GUO H

Preparation of 4,4'-diaminodiphenylmethane involves adding formaldehyde or paraformaldehyde into aniline solution, and adding water and graphene catalyst for catalysis.

FENG J, ZHANG Q, DAI Y, CHEN D, MA C, WU M

Synthesizing caprolactam comprises using catalyst to catalyze reaction raw material comprising cyclohexanone oxime to carry out Beckmann gas-phase rearrangement reaction to obtain caprolactam.

GUO Y, HAN M, DAI Y, KONG M, XU L, DING K, GUO H, WANG G

Composite molecular sieve useful in catalyst for preparing caprolactam from cyclohexanone oxime comprises silicon-based molecular sieve core body and graphene oxide shell layer coated on outer surface of silicon-based molecular sieve core body.

YIN J, KONG M, DAI Y, HAN M, XU L, DING K, WANG G, GUO H

Preparing catalyst useful for synthesizing caprolactam, comprises stirring and mixing raw materials including graphene oxide, phosphorus source and solvent, and subjecting mixture to solid-liquid separation, washing, drying, and roasting in nitrogen or inert gas atmosphere.

KONG M, HAN M, ZHANG X, DAI Y, XU L, DING K, GUO H, WANG G