It is learned from Huazhong University of Science and Technology that the team of Professor Pang Yuanjie from the School of Optoelectronics and Information Technology of the school took acetic acid as the target product, and cooperated with researchers from the University of Toronto, Wuhan University of Technology and other universities to realize the "zero carbon" production of acetic acid through electrocatalytic carbon dioxide reduction technology. Relevant results were recently published in the internationally renowned academic journal Nature.
Acetic acid, also known as acetic acid, is an important organic chemical raw material. A large amount of acetic acid is used in the manufacture of chemical fiber clothing, perfumes, and processed plastic products. Existing industrial methods emit approximately 1.6 kg of carbon dioxide per kg of acetic acid produced.
It took four years for Pang Yuanjie's team to efficiently prepare acetic acid from carbon dioxide. The experiment used carbon dioxide and water as raw materials to generate acetic acid, the main product, and was able to maintain the acetic acid production rate of more than 80% for 820 consecutive hours, breaking the existing world record in terms of selectivity, energy conversion efficiency, and stability.
According to Pang Yuanjie, electrocatalytic carbon dioxide reduction technology is a clean energy storage method with great potential. However, in the electrolysis process, how to produce a single high-value-added product with high selectivity and high speed is a problem that the team has been troubled for a long time.
"In order to stabilize the production rate of acetic acid, the first problem we have to solve is the design and construction of the reaction device, followed by the selection of the catalyst." Pang Yuanjie said that using the innovation of high-voltage devices and catalysts, the team used electrocatalytic carbon dioxide reduction Based on the technology, the "two-step method" carbon dioxide reduction pathway was adopted to stabilize the key intermediate group in the acetic acid reaction path, and finally synthesized acetic acid with high yield.
According to reports, using this technology, not only carboxylic acid chemicals such as acetic acid, but also important chemicals such as hydrocarbons and alcohols are expected to achieve "zero-carbon" manufacturing, so that carbon dioxide can be used in the production process of medicine, fuel, and chemical raw materials. be applied more widely.
In addition, this technology can convert the electrical energy generated by solar panels into fuel chemical energy that is easy to store, and then release the fuel chemical energy in an orderly manner to meet the various energy needs of life and production in real time. The production of ethanol (alcohol) can also be carried out by selecting a suitable catalyst, so as to get rid of the dependence on the production of ethanol with crops as raw materials, so that ethanol can be used in a wider range of clean energy.
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