Zhejiang University

The University of Texas System

University of Limerick

Xili Cui

Huabin Xing

Banglin Chen

Michael Zaworotko

Zongbi Bao

Qiwei Yang

Qilong Ren

Lifeng Yang

Qi Ding

Kai Jie Chen

The present invention provides a method for the adsorptive separation of CHand CHusing ultramicroporous metal-organic framework material, comprising the following steps that (1) CH/CHmixture is contacted with the ultramicroporous metal-organic framework material; (2) CHis preferentially adsorbed and the separation of CH/CHis realized. The described 'ultramicroporous metal-organic framework material' has a formula of [MLA], wherein M represents the metal cation being any one of Cu, Zn, Co, and Ni; L represents the organic linker being any one of 1,2,4-triazole and its derivatives; A represents the oxygen-containing inorganic anion being any one of POand VO. The class of ultramicroporous metal-organic frameworks has optimal pore size and pore chemistry, exhibiting both higher uptake capacity and faster adsorption rate for CHas compared to CH, thus CHcan be preferentially adsorbed by these metal-organic frameworks with high selectivity, and high-purity CHcan be separated from CH/CHmixtures efficiently.

Method for the adsorptive separation of ethylene and ethane using ultramicroporous metal-organic framework

The present invention discloses a method of separating C8 aromatic hydrocarbon isomers. The anion-pillared metal-organic framework materials with a pore diameter of 5-10 Å is used as adsorbents to achieve selective adsorption and separation of C8 aromatic hydrocarbon isomers by contacting the C8 aromatic hydrocarbon isomers with the adsorbents; the anion-pillared microporous materials are porous materials formed by metal ion M, inorganic anion A and organic ligand L through coordination bonds, with the general formula of [MAL], where n>4 and n is an integer; the descried 'metal ion M' is Fe, Co, Ni, Cu; the descried “inorganic anion A” is SiF, NbOF, TaF, ZrF, TiF, GeF, SOCF, NbF; the descried “organic ligand L” is selected from any of the following:

Method for separating C8 aromatic hydrocarbon isomer mixture

A method of separating acetylene from a gas mixture comprising acetylene is provided. The method involves the use of a hybrid porous material with an affinity for acetylene adsorption. The hybrid porous material comprises a three-dimensional structure of metal species (M) and first and second linker groups (Land L), wherein the metal species (M) are linked together in a first and second direction by first linker groups (L) and are linked together in a third direction by second linker groups (L) to form the three-dimensional structure. The hybrid porous materials may have a high selectivity for acetylene and/or a high capacity for acetylene adsorption. The method may be particularly useful for the purification of ethylene gas contaminated with acetylene during an ethylene production/purification process. The method may be particularly useful for the large scale separation of acetylene from other gases such as ethylene and carbon dioxide, during an acetylene production/purification process.

Methods for gas separation

A method for the adsorption separation of propylene and propyne, comprising selectively adsorbing propyne from a mixed gas of propylene and propyne using an anion-containing metal-organic framework material as an adsorbing agent so as to obtain a purified propylene gas. The anion-containing metal-organic framework material is used as an adsorbing agent in the method, and the adsorbing agent is a kind of highly ordered microporous organic-inorganic hybrid material, with the pore size thereof being adjustable within the range of 0.4-1.2 nm, and the pore volume thereof being adjustable within the range of 0.1-1.2 cm3/g. A large number of anionic active sites and a highly ordered spatial arrangement thereof allow the adsorbing agent to exhibit excellent propyne adsorption properties. Thus, the adsorbing agent has a very high propyne selectivity and adsorption volume.

Method for adsorption separation of propylene and propyne

Growing community of inventors

Hangzhou, China

Xili Cui