专业英语综述1.doc

The development with MOFs in application It is well known that Metal–organic frameworks (MOFs) plays a important role in the profession of organic and inorganic, also known as porous coordination polymers (PCPs), are an emerging type of porous materials which are formed by the self-assembly of metallic centers and bridging organic linkers. Design and synthesis of organic linkers are very critical to target MOFs with desired structures and properties. In this review, we summarize and highlight the part that the recent development of porous MOFs that are constructed from the multicarboxylate ligands containing m-benzenedicarboxylate moieties, and their promising applications in gas storage and separation and heterogeneous catalysis. 1. Introduction With the fast development rate of our society, all kinds of technology had presented a prosperous scene ,especially in chemical profession and chemical industry. A lot of chemical productions have been manufactured, like medicine drugs, pesticide, cosmetic, fossil fuel and so on. But in this procedure, there are many harmful waste pollutant had been made, so we must come up with good ideas to settle it. It is a challenge project for us. While much more attention of the MOF community has been devoted to adsorption and purification of gases, there is now also a vast body of data on the capability of MOFs to separate and purify liquid mixtures. Initial studies focused on separation of petrochemicals in apolar backgrounds, but the attention has moved now to the separation of complex, e.g. chiral compounds, and to the isolation of bio-based compounds from aqueous media. We here give an overview of most of the existing literature, with an accent on separation mechanisms and structure–selectivity relationships. A large portion of the production costs areassociated with purification steps, for instance using solvent extraction, adsorption, crystallization and distillation processes. 1,2 Presently, distillation