 Prof. Hong He’s group has made an important progress in Cu-based small-pore zeolites utilized for NOx catalytic purification. The corresponding results have been published in the journal of the Appl. Catal. B (2020, 266, 118655 and 2020, 264, 118511), Catal. Sci. Tehhnol. (doi.org/10.1039), and Chem. Eng. J. (2020, 388, 124250).  Congratulations to Academician Hong He for winning the National Natural Science Award（second prize）2019!  Prof. Hong He's group got an important achievement in NH3 selective catalytic reduction of NOx (NH3-SCR). The related work “Polymeric vanadyl species determine the low-temperature activity of V-based catalysts for the SCR of NOx with NH3” was published in Science Advances.  At the invitation of academician of National Academy of Engineering and Professor David y. h. Pui of University of Minnesota, academician Hong He, researcher of Center for Eco-Environmental Science of CAS, and chief scientist of Center for Excellence in Regional Atmospheric Environment of CAS, visited University of Minnesota, and made outstanding scholar report (L.M. fingerson / TSI incorporated distinguished structure) in September 2019.  Congratulations to Professor Hong He for his election as a member of the Chinese Academy of Engineering in 2017!  Congratulations to Professor Hong He on the He Liang He li Foundation Science and Technology Innovation Award 2017！  Congratulations to Professor Hong He for winning the National Science and Technology Progress Award (Second Prize) 2014!  Congratulations to Professor Hong He for winning the National Technology Invention Award (Second Prize) 2011!  The 6th International Conference on Environmental Catalysis (6th ICEC) was held at Beijing from September 12 to September 15, 2010. The 6th ICEC received a total 475 submitted abstracts and welcomed 398 active participants came from 26 countries and regions. 133 oral presentations (including 16 keynote lectures) were arranged in 8 sessions. 10 participants from China, Germany, the Netherland, Italy and Turkey won the best posters award.
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Haze chemistry: study formation mechanism of secondary particles under the condition of air pollution complex.

Complex air pollution and haze chemistry

The atmosphere is a mixed system of multi-pollutant and multi-media. Air pollution in China shows the characteristics of complex air pollution, in which the migration and transformation of pollutants will change. To reveal these new laws and mechanisms is not only a new challenge for atmospheric chemistry, but also a scientific basis for air pollution control in China. Haze frequently occurs with high concentrations of PM2.5 due to the explosive growth of secondary particles. A key step in controlling pollution is revealing the formation mechanism of secondary particles under the conditions of complex air pollution in China.

At present, the prediction of PM2.5 and its key secondary components in the atmospheric model shows large deviations from field measurements, which indicates that there are unknown mechanisms for the formation of secondary particles in the atmosphere. Based on laboratory simulation and field observation, we have revealed a new mechanism for the formation of secondary particles under the conditions of complex air pollution, and put forward the “haze chemistry” theory to explain the cause of complex air pollution in China. The main idea is that the oxidation capacity and the explosive growth of the transformation from gaseous pollutants to particulate pollutants increases under the conditions of complex air pollution. The decrease of environmental capacity has resulted in frequent haze pollution events in central and eastern China and made governance difficult. It is suggested that key pollutants such as SO2, VOCs, NOx, black carbon and NH3 should be controlled to improve the environmental capacity.







Complex air pollution
 
Group of Environmental Catalysis and Green Chemistry
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