Original document(8 pages) Authorized document(4 pages) 中文版
    This invention discloses a catalyst system for preparing carbamate by the direct treducing carbonylation of aromatic nitro compound and CO in alcohol. Said catalyst system comprises Pd, transition metal compounds and/or rare-earth compounds, and N-containing ligand. The reaction is conducted at 20-80 atm and 120-240 (especially 160-220) deg. C for 1-4 hours. The transform rate of nitro compound is up to 100%. The selectivity of carbamate is greater than 95%. The PhNO2]/ PdCl2] reaches over 10000 (mole ratio).
Application Number
91105951 Application Date
Title 名称 Production method of aromatic amino ester formate
Publication Number
1058923 Publication Date
Approval Pub. Date Granted Pub. Date 1994.05.25
International Classification 分类号 B01J31/18,B01J31/24
Applicant(s) Name
Xiamen Univ.
Address 地址 361005
Inventor(s) Name 发明人
Attorney & Agent 代理人 DAI SHENJUN

Process and device for introducing powder into vessel
Automatic epicyclic stirring mechanism
Improved air spration pressure swing adsorption process
Dust collector with desulfurization and deodorization functions
Safety system
Electric-stimulation iontophoresising bra
Bioelectric toothbrush
Production mehtod of medicine for curing chicken' disease
Multifunctional oral liquor containing spirits liquid
Preparation method of tablets for curing liver disease
Note:All patent data come from State Intellectual Property Office of the People's Republic of China. If there were discrepancies between here and the State Intellectual Property office, the later is more accurate. The patent data is only for public exchange and learning purposes. We are not responsible for the adverse consequences with unverified use of the data.