Citation: Jing Lin CHEN, Wei Guo CHENG, Hong Feng LIU, Qing Song LIN, Lian Hai LU. Vapor-phase Nitration of Benzene to Nitrobenzene over Supported Sulfuric Acid Catalyst[J]. Chinese Chemical Letters, ;2002, 13(4): 311-314. shu

Vapor-phase Nitration of Benzene to Nitrobenzene over Supported Sulfuric Acid Catalyst

State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116012

Received Date: 19 July 2001

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.
- Nitration(vapor-phase),
- sulfuric acid(supported catalyst),
- nitrobenzene
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