Flow Toolkit for Measuring Reaction Enthalpy and Application to Highly Exothermic Synthesis of Alkylaluminoxanes
Flow Toolkit for Measuring Reaction Enthalpy and Application to Highly Exothermic Synthesis of Alkylaluminoxanes
复制标题
用于测量反应焓的流量工具包及其在烷基铝氧烷高放热合成中的应用
DOI:
10.1021/acs.oprd.2c00072
复制
发表时间:
2022-04
期刊:
影响因子:
--
通讯作者:
Yongrong Yang
中科院分区:
文献类型:
--
作者:
Mengbo Zhang;Yirong Feng;Linjin Lou;Haomiao Zhang;Jingdai Wang;Yongrong Yang
We present a flow strategy to characterize reaction enthalpy and showcase the application in synthesis of alkylaluminoxanes from the fast and exothermic alkylaluminum hydrolysis. Our platform mainly encompasses a three-dimensional printed micromixer and a tubular reactor in an adiabatic vacuum box, aided by a thermal imaging camera to record temperature profiles. The temperature increase at steady state is used to calculate the released heat, which is further decoupled to quantify the reaction enthalpy and enthalpy of mixing. We validate the concept with the classic neutralization reaction between sulfuric acid and sodium hydroxide, with less than 2% deviation from theoretical values. In application, we determine the exothermic reaction enthalpy and the endothermic enthalpy of mixing to be −143.13 and +7.66 kJ/mol for triisobutylaluminum hydrolysis and −164.63 and +5.03 kJ/mol for trimethylaluminum hydrolysis, respectively. The presented platform, on the one hand, yields new insights into the microreactor scale-up for alkylaluminoxane synthesis and, on the other hand, can be readily used to measure reaction enthalpies of other reactions.
登录
查看更多内容
影响因子:
5.5
作者:
Harmen S. Zijlstra;M. Stuart;S. Harder
通讯作者:
Harmen S. Zijlstra;M. Stuart;S. Harder
影响因子:
15.1
作者:
C. Hany;Helene Lebrun;C. Pradère;J. Toutain;J. Batsale
通讯作者:
C. Hany;Helene Lebrun;C. Pradère;J. Toutain;J. Batsale
影响因子:
5.5
作者:
L. Resconi;Sandro Bossi;L. Abis
通讯作者:
L. Resconi;Sandro Bossi;L. Abis
影响因子:
3.7
作者:
Haomiao Zhang;Thomas Kopfmüller;Ramona Achermann;Jisong Zhang;Andrew R. Teixeira;Yi Shen;K. Jensen-K.-Jense
通讯作者:
Haomiao Zhang;Thomas Kopfmüller;Ramona Achermann;Jisong Zhang;Andrew R. Teixeira;Yi Shen;K. Jensen-K.-Jense
DOI:
10.1146/annurev-chembioeng-060816-101443
发表时间:
2017-06
影响因子:
8.4
作者:
Jisong Zhang;Kai Wang;Andrew R. Teixeira;K. Jensen;G. Luo
通讯作者:
Jisong Zhang;Kai Wang;Andrew R. Teixeira;K. Jensen;G. Luo