[EN] PROCESS FOR THE CONVERSION OF ETHANE TO ETHYLENE GLYCOL [FR] PROCÉDÉ DE CONVERSION D'ÉTHANE EN ÉTHYLÈNE GLYCOL
摘要:
The present invention refers to a route for the conversion of ethane to ethylene glycol which involves reacting ethane with concentrated sulfuric acid in the presence of an iodine compound. In particular, the present invention includes a process for the production of ethylene glycol from shale gas.
不可避免地使用强无机酸及其可重复使用性的限制是葫芦[n]脲(CB[n])合成的主要挑战之一。当酸浓度低于 5 M 时,不会发生葫芦脲的形成 [1]。在此,我们报告了使用[ethan-1,2-二基双(硫酸氢)](EDSA)作为绿色反应介质对葫芦[n]脲进行环境友好的合成。该方案的优点是催化剂制备方法简单、操作安全、可回收至少三次,并且可以获得高纯度的葫芦脲。该反应也可以以千克规模进行。这些优点可能使乙烷-1,2-二基双(硫酸氢)成为葫芦脲合成的首选催化剂。
不可避免地使用强无机酸及其可重复使用性的限制是葫芦[n]脲(CB[n])合成的主要挑战之一。当酸浓度低于 5 M 时,不会发生葫芦脲的形成 [1]。在此,我们报告了使用[ethan-1,2-二基双(硫酸氢)](EDSA)作为绿色反应介质对葫芦[n]脲进行环境友好的合成。该方案的优点是催化剂制备方法简单、操作安全、可回收至少三次,并且可以获得高纯度的葫芦脲。该反应也可以以千克规模进行。这些优点可能使乙烷-1,2-二基双(硫酸氢)成为葫芦脲合成的首选催化剂。
A Mechanistic Change Results in 100 Times Faster CH Functionalization for Ethane versus Methane by a Homogeneous Pt Catalyst
作者:Michael M. Konnick、Steven M. Bischof、Muhammed Yousufuddin、Brian G. Hashiguchi、Daniel H. Ess、Roy A. Periana
DOI:10.1021/ja504368r
日期:2014.7.16
oxidative functionalization of ethane, a significant component of shale gas, to products such as ethylene or ethanol at low temperatures and pressures remains a significant challenge. Herein we report that ethane is efficiently and selectively functionalized to the ethanol ester of H2SO4, ethyl bisulfate (EtOSO3H) as the initial product, with the Pt(II) "Periana-Catalytica" catalyst in 98% sulfuric acid
Iodine-Catalyzed Selective Functionalization of Ethane in Oleum: Toward a Direct Process for the Production of Ethylene Glycol from Shale Gas
作者:Marius Bilke、Tobias Zimmermann、Ferdi Schüth
DOI:10.1021/jacs.0c08975
日期:2020.12.30
Direct valorization of ethane, a substantial component of shale gas deposits, at mild conditions remains a significant challenge, both from an industrial and an academic point of view. Herein, we report iodine as an efficient and selective catalyst for the functionalization of ethane in oleum at low temperatures and pressures. A thorough study of relevant reaction parameters revealed iodine to be remarkably
Design and synthesis of Brønsted-Lewis acidic tetraimidazolyl ionic liquids for efficient catalytic conversion of glucose to 5-hydroxymethylfurfural in water/1-octanol
A series of Brønsted-Lewis acidic tetraimidazolyl ionicliquids ([TeimILs]) were designed and synthesized by introducing Brønsted acid (-SO3H) in the cation and Lewis acid (AlCl3) in the anion. Among them, [Teim-PS][AlCl4]4 exhibited good catalytic performance in the conversion of glucose to 5-HMF in the biphasic system of H2O: 1-octanol= 1:2, and the conversion of glucose and the yield of 5-HMF can
Theory and Experiment Demonstrate that Sb(V)-Promoted Methane C–H Activation and Functionalization Outcompete Superacid Protonolysis in Sulfuric Acid
作者:Shu-Sen Chen、Anjaneyulu Koppaka、Roy A. Periana、Daniel H. Ess
DOI:10.1021/jacs.1c08170
日期:2021.11.3
calculations show that a C–H activation and Sb-Me bond functionalization mechanism to give methyl bisulfate outcompetes methane protonolysis and many other possible reaction mechanisms, such as electron transfer, proton-coupled electron transfer, and hydride abstraction. Our DFT calculations also explain experimental hydrogen–deuterium exchange studies and the absence of methane carbo-functionalization/oligomerization
New basic ionic liquid from ethan-1,2-diyl bis (hydrogen sulfate) and DBU (1,8-diazobicyclo[5.4.0]undec-7-ene) as an efficient catalyst for one-pot synthesis of xanthene derivatives
作者:Behrooz Maleki、Elahe Akbarzadeh、Saeed Babaee
DOI:10.1016/j.dyepig.2015.08.009
日期:2015.12
For the first time a new basic ionic liquid from ethan-1,2-diyl-bis (hydrogen sulfate) and 1,8-diazobicyclo [5.4.0]undec-7-ene was suggested. The catalytic activity of the new ionic liquid was tested for synthesis of xanthene derivatives by condensation of aldehydes with i) dimedone ii) beta-naphthol iii) 2-hydroxynaphthalene-1,4-dione iv) dimedone and beta-naphthol v) 2-hydroxynaphthalene-1,4-dione and dimedone vi) beta-naphthol and 2-hydroxynaphthalene-1,4-dione. This approach is a clean, environmentally friendly and convenient work up protocol. The new ionic liquid is an effective and inexpensive catalyst that could easily be recycled and reused five times without significant loss of catalytic activity. (C) 2015 Elsevier Ltd. All rights reserved.