| Vapor—phase Nitration of Benzene to Nitrobenzene over Supported Sulfuric Acid Catalyst |
| |
| 作者姓名： | Jing Lin CHEN Wei Guo CHENG Hong Feng LIU Qing Song LIN* Lian Hai LU State Key Laboratory of Fine Chemicals Dalian University of Technology Dalian |
| |
| 作者单位： | Jing Lin CHEN，Wei Guo CHENG，Hong Feng LIU，Qing Song LIN*，Lian Hai LU State Key Laboratory of Fine Chemicals，Dalian University of Technology，Dalian 116012 |
| |
| 摘 要： | Nitrobenzene is an important chemical intermediate for producing dyestuffs. It is also used as a solvent. The industrial synthesis of nitrobenzene has been carried out in liquid phase with a mixture of nitric acid and concentrated sulfuric acid. This conventional nitration process still has some unsolved problems such as treatment of waste sulfuric acid and disposal of wastewater. The vapor-phase nitration of benzene to prepare nitrobenzene over the solid acidic catalysts in diluted nitric…
|
| 关 键 词： | 水蒸气相硝化作用 氮化 硝基苯 硫磺酸催化剂 |
Vapor-phase Nitration of Benzene to Nitrobenzene over Supported Sulfuric Acid Catalyst |
| |
| Jing Lin CHEN,Wei Guo CHENG,Hong Feng LIU,Qing Song LIN*,Lian Hai LU State Key Laboratory of Fine Chemicals,Dalian University of Technology,Dalian .Vapor-phase Nitration of Benzene to Nitrobenzene over Supported Sulfuric Acid Catalyst[J].Chinese Chemical Letters,2002,13(4):311-314. |
| |
| Authors: | Jing Lin CHEN Wei Guo CHENG Hong Feng LIU Qing Song LIN Lian Hai LU |
| |
| Abstract: | Vapor-phase nitration of benzene over solid acid catalyst is expected to be a clean process with no sulfuric acid waste.We investigated this process over solid acidic catalysts utilizing diluted nitric acid (60-70%) as nitrating agent,and found that supported sulfuric acid catalyst exhibited a very high catalytic activity.Under the conditions of reaction temperature 160-170℃,space velocity (SV) 1200 h-1,the yield and the space-time yield (STY) of nitrobenzene (NB) based on HNO3 were more than 98% and 0.75 kg@kgcat-1@h-1 over 10% H2SO4/SiO2 (by weight) catalyst respectively. |
| |
| Keywords: | Nitration (vapor-phase) sulfuric acid (supported catalyst) nitrobenzene |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
