Recently, Deng Weiqiao, researcher of Dalian Institute of Chemical Physics, Chinese Academy of Sciences and others have developed a conjugated microporous polymer material, which for the first time captures considerable carbon dioxide under normal temperature and pressure, and can catalyze carbon dioxide and alkylene oxide at room temperature and pressure. The reaction produces high value-added cyclocarbonates.
Industry experts said that this will provide new solutions to the "carbon dioxide emission reduction problem" that has plagued the world. The use of carbon dioxide as an important resource that is safe, non-toxic, abundant, widely distributed, cheap, and renewable will also be used. Has a good application prospects.
At present, carbon dioxide emission reduction usually has two means: First, capture and sequestration, carbon dioxide capture by chemical or physical adsorption method for sequestration; the second is the use of carbon dioxide, carbon dioxide is used to synthesize valuable chemicals. However, both “capture†and “utilization†consume large amounts of energy, which inevitably results in secondary emissions of carbon dioxide. In addition, both processes require costly large-scale high-temperature or high-pressure devices, regardless of cost. In terms of effect, they are not very satisfactory.
The newly developed conjugated microporous polymer material of the Dalian Institute of Chemicals, Chinese Academy of Sciences, can capture carbon dioxide at the same temperature and pressure, and convert it into a cyclic carbonic acid ester (a kind of conjugated microporous polymer material that can be used in many everyday products such as lithium batteries. Chemicals) Compared with traditional carbon dioxide emission reduction methods, its advantages are mainly reflected in five aspects:
One is environmentally friendly, does not produce secondary CO2 emissions; the second is long life, can be recycled, the surface area of ​​the material up to 700-1000 square meters per gram, under normal temperature and pressure 1 g polymer can absorb 70-80 mg of carbon dioxide; Third, the catalytic performance, its catalytic properties are much better than the existing industrial catalysts and their corresponding homogeneous catalysts, is the only heterogeneous catalyst that can catalyze the reaction under normal temperature and pressure; Fourth, the stability is strong, Material catalysts are acid and alkali-resistant, and are not affected by air or light. Fifth, the cost is low. It does not use precious metals by itself. Therefore, the scale production cost is low, and the reaction process can be realized by using a miniaturized device, further reducing substantially. The cost of the entire reaction process.
According to reports, conjugated microporous polymers are a new type of porous material discovered in 2007 and have been widely used in various fields because of their excellent properties. The Dalian Institute of Chemicals of the Chinese Academy of Sciences has been working on the development and application of conjugated microporous polymers since 2009: In 2010, conjugated microporous polymers were applied to the field of hydrogen storage; in 2011, conjugated microporous polymers were applied to oils. The selective adsorption and separation field; this time applied to carbon dioxide emission reduction is a breakthrough on the basis of the previous research on the conjugated microporous polymer adsorption material.
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