国家/地区 中国（11）
IPC部 B（11） C（11）
IPC大类 B01（11）
IPC小类 B01J（11） C07C（9） C01B（2）
C07D（2）
IPC B01J027/24（11）
发明人 MA X（2） SUN Q（2） WANG G（2）
公开年 2023（11）
申请年 2022（11）
专利权人

Producing urea for vehicles involves passing ammonia and carbon dioxide into synthesis tower, adding graphene-supported nitrogen atom catalyst, controlling temperature and pressure, reacting, depressurizing, cooling, separating gas and liquid, concentrating liquid, spray drying and granulating.

DU F, WANG Q, MO Z, WANG D, LUO X, FU L

Preparing nano metal catalyst, comprises e.g. preparing metal nanoparticles, dissolving it in a cyclohexane, dispersing activated carbon in mixed solvent consisting of methanol and cyclohexane, and adding obtained solution under stirring and/or ultrasonic conditions.

ZHOU T, LI J

Continuously producing 5-hydroxymethylfurfural and 2,5-furandicarboxylic acid by e.g. dehydrating fructosyl carbohydrate in molecule in two-liquid-phase reaction medium, and adding water to organic phase containing 5-hydroxymethylfurfural.

SUN Q, CHEN G, ZHENG L, DU Z, ZONG B

Fluorinated alkylene oxide isomerization catalyst useful for isomerization of fluorinated alkylene oxide to prepare carbonyl-containing products, comprises fluoride-alumina catalyst component, auxiliary component e.g. graphene and impurity metal elements e.g. chromium and tungsten.

ZHANG C, WANG G, HUANG A, MIAO L, JIN H, XING H

Preparing nitrogen-doped porous graphene used for efficient catalytic reduction of aromatic nitro compound, involves preparing graphene oxide suspension and freeze-drying; dispersing graphene oxide aerogel, nitrogen-containing precursor and activating agent into deionized water.

QI M, WANG M

Catalyst used for catalyzing citronellal reaction to prepare glycol, comprises metal oxide comprising tungsten metal oxide, cerium metal oxide, zirconium metal oxide and/or molybdenum metal oxide, and carrier.

GUO J, ZHAO Y, TIAN W, LI Y, XU S, SUN Q, ZHU J, HU J, XIE J, WANG G, LI C

Non-noble metal acetylene selective hydrogenation catalyst nickel-copper nitride useful in the selective hydrogenation reaction of acetylene, prepared by e.g. loading a nickel-copper nitride active component on the boron nitride as nano-carrier.

PU Y, NIU Y, ZHANG B

Boron nitride composite carrier loaded copper catalyst useful in the heterogeneous hydrogenation reaction of dimethyl oxalate, comprises e.g. copper species and boron nitride composite carrier.

HUANG S, LV J, MA X, ZHEN Z, WANG Y

Preparing catalyst used for preparing vanillic aldehyde and 4-methyl guaiacol, involves mixing metal nickel salt, cobalt salt, carbon source, and amine source in solvent in certain proportion, heating, stirring to form uniform jelly, and drying jelly to obtain the catalyst precursor.

CHEN L, ZHANG Q, ZHANG X, MA L, LIU J

Synthesizing 1,3-butadiynes by heterogeneous catalysis comprises adding aryl-substituted alkynes, oxygen and nitrogen-doped graphene-supported copper catalyst into N,N-dimethylformamide solution, stirring and reacting.

GE Y, YANG D, MA X