Determination of the kinetics of chlorobenzene nitration using a
homogeneously continuous microflow
- Yongjin Cui,
- Jing Song,
- Chencan Du,
- Jian Deng,
- Guangsheng Luo
Abstract
The nitration of chlorobenzene with concentrated mixed acids is a fast
and highly exothermic process, which suffers from considerable mass
transfer resistance and poor heat transfer rates. The reaction kinetics
has not been thoroughly reported before. In this work, a continuous-flow
microreactor system and a homogeneous reaction condition were proposed
to obtain accurate chlorobenzene nitration kinetics data at high mixed
acid concentrations. A general model for predicting the observed
reaction rate constants was established. With a new method for
estimating the equilibria associated with HNO3 in aqueous sulfuric acid,
the rate constants based on nitronium ion and activation energies were
obtained. Compared with batch reactors, the continuous-flow microreactor
system allows for a sufficient heat transfer efficiency and accurate
residence time control, making it possible to study the reaction
performance more quickly and sensitively. This work may provide a
reliable reference for the kinetic study of similar processes.22 Apr 2021Submitted to AIChE Journal 23 Apr 2021Submission Checks Completed
23 Apr 2021Assigned to Editor
06 May 2021Reviewer(s) Assigned
20 Jul 2021Editorial Decision: Revise Major
01 Sep 20211st Revision Received
05 Sep 2021Submission Checks Completed
05 Sep 2021Assigned to Editor
07 Sep 2021Reviewer(s) Assigned
28 Dec 2021Editorial Decision: Accept