Enlargement Synthesis Of Knitting Aryl Network Polymers And The Application In Methane Storage

Microporous organic polymers（MOPs）are mainly composed of non-metallic light elements through covalent bond and contain a great deal of micropores（pore size smaller than 2 nm）,including polymers of intrinsic microporosity（PIMs）,covalent organic frameworks（COFs）,conjugated microporous polymers（CMPs）,hypercrosslinked polymers（HCPs）.They have light weight,larger surface area,adjustable pore size,and easy to be modified.However,with the restriction of raw material cost,reaction condition or material stability,we didn’t see the large synthesis of these MOPs.And for our HCPs,Knitting Aryl Network Polymers showed good result in many applications,what’s more the raw materials are cheap,the reaction contion is mild,and only need one step,so it showed great potential for industry synthesis.In order to use the materials in real life,we need to synthesis the HCPs in industry,so the pilotscale test is needed to find and solve the problems that are not found in the laboratory.Being a sort of clean energy,natural gas with methane as the major composition has great development potential for its remarkable advantages as rich reserves,low cost,less environmental pollution and safety usage.While the application of natural gas at present has been seriously restricted because of the lack of efficient storage and release technology.Adsorbed natural gas technology display a promising prospect when it is compared with the compressed or liquefied storage techniques for its mild storage conditions without high pressure or low temperature.This thesis mainly contain following two part.In the first part,the purity of the raw material,the heat and mass transfer are all different in industry when compared with that in laboratory,so the performance of the products may show decrease or even cannot get products.So we choose benzene as the monomer and crosslinked at different enlargement of 1,20,40,100 and 400 times,and characterized HCPs by FTIR,SEM,TEM,BET and pore analysis.For the problems of heat effect,mass transfer,corrosion,purification and the block of the products.We choose the stepwise dropping method to improve the heat and mass transfer;and prevent corrosion by coating;with the soxhlet extraction machine to purificate the products.To improve the working effiency and decrease the cost,we choose 80℃,8 h as the optimized conditions.When enlarge the scale to 400 times,the BET of the products decreased from 1263 m²/g to876 m²/g.In the second part,we applied our HCPs in methane storage.First we studied the methane uptake ability in benzene based HCPs at different temperature and bulk density,and then compared the difference of storage ability at rapid filling and release with isothermal storage,at 298 K/6.5 MPa the methane uptake ability is 72.1 V/V.Finally we choose methylbenzene,phenol,pyrrole and thiophene as the monomers to get HCPs which have stronger attraction with CH₄,and study its methane uptake ability at 298 K/6.5 MPa,the methane uptake is 67.9 V/V,62.6 V/V,56.0 V/V,63.3 V/V respectively,it showed that different monomers have certain influence on the methane uptake ability and guide for the preparation of better methane uptake adsorbents in future.