Dilute acid oxidation of dinitrotoluene alkaline wash water
申请人:AIR PRODUCTS AND CHEMICALS, INC.
公开号:EP0962446A1
公开(公告)日:1999-12-08
A process for removing nitrocresols in a crude aqueous alkaline dinitrotoluene wash stream derived by nitration of toluene using a mixed acid technique followed by treatment with aqueous alkaline material in which the crude aqueous alkaline dinitrotoluene wash stream is mixed with a dilute oxidizing acid such as nitric acid, heated to 130 to 180 °C for a period of time required to reduce the nitrocresols to a level at which it does not precipitate from the mixed acidic wash stream at temperatures above about 60 °C, and removing the remaining nitrocresols by conventional methods such as adsorption or activated sludge biotreatment.
REDOX-ACTIVE CHROMOPHORE MOLECULES AND DEVICES UTILIZING THE SAME
申请人:YEDA RESEARCH AND DEVELOPMENT CO., LTD.
公开号:EP3228624A2
公开(公告)日:2017-10-11
A compound of general formula I:
and a sensor device comprising said compound which is configured and operable for sensing at least one predetermined liquid or gas substance.
通式 I 的化合物:
以及包含上述化合物的传感器装置,该装置经配置可用于感应至少一种预定的液体或气体物质。
Increasing the catalyst selectivity in the continuous hydrogenation of nitro compounds by adding ammonia
申请人:BASF SE
公开号:US11339115B2
公开(公告)日:2022-05-24
The present invention relates to a process for continuous hydrogenation of a nitro compound to the corresponding amine in a liquid reaction mixture comprising the nitro compound in a reaction chamber in the presence of a supported catalyst which comprises as the active component at least one element from groups 7 to 12 of the periodic table of the elements, wherein ammonia is added to the reaction chamber during the hydrogenation.