China University of Petroleum

Petrochina Company Limited

Guangjin Chen

Changyu Sun

Bei Liu

Hai Tao Li

An Ma

Xiulin Wang

Xueteng Gao

Lijun Yan

Mingke Yang

Xuqiang Guo

Wan Chen

Huang Liu

Peng Xiao

Hongbo Zhang

Mengling Luo

The present invention provides a preparation method for zeolitic imidazolate frameworks. The preparation method comprises: adding a metal carbonate or oxide, an organic ligand to a hydrophilic liquid to obtain a mixture; introducing an acidic gas to reach a reaction pressure of 0.1 MPa to 2.0 MPa, and reacting for a predetermined time; heating to 30&#xb0; C.-60&#xb0; C. and vacuuming to obtain the zeolitic imidazolate framework. The present invention also provides a zeolitic imidazolate framework obtained by the above preparation method. The preparation method according to the present invention is environmentally friendly and has a high yield.

Preparation method for zeolitic imidazolate frameworks

A hybrid method for capturing COfrom a gas mixture is provided, comprising a step of contacting the COcontaining gas mixture with a slurry consisting of a liquid medium, imidazole or imidazole derivative(s), and a metal-organic framework material (MOFs). For the slurry system, the mass fraction of the imidazole or imidazole derivative(s) in it ranging from 2 to 50% and the mass fraction of the metal-organic framework material in it ranging from 5 to 25%. In the technical solution provided in the present invention, through combining absorptive separation by the liquid solution in which the imidazole or imidazole derivative(s) is dissolved, adsorption separation by the MOF material suspended in the solution, and selective permeation separation by a liquid medium film forms on the outside surface of the suspended MOFs, an absorption-adsorption hybrid separation effect for COgas mixtures is efficiently achieved. In the COcapture method provided in the present invention, conventional absorption separation and adsorptive separation technologies are effectively combined, furthermore, the addition of imidazole or imidazole derivative(s) substantially increases both the COcapture ability and capture amount of the MOFs/liquid slurry, showing a great potential in industrial applications.

Composite method of trapping carbon dioxide in gas mixture

An apparatus and a method that increase the concentration of recycled hydrogen in the hydrogenation unit are disclosed having a hydration separation unit included between the high-pressure separator and hydrocracking reactor. A part of the recycled hydrogen contacts with the water-in-oil microemulsion to form hydrates from which the light hydrocarbon components are removed. The gas flow entering into the hydration separation unit is present in amount of 20%&#x2dc;100% of the total gas flow coming from the high-pressure separator; the water-in-oil microemulsion, in which the volume ratio of oil and water is 1:1 to 5:1 may increase hydrogen partial pressure in the reactor and thus upgrade the performance of hydrogenation.

Apparatus and method for increasing the concentration of recycled hydrogen in a high pressure hydrogenation reactor

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Beijing, China

Guangjin Chen