Research team led by Professor Dai Bin from Shihezi University: Spherical catalysts assist in flue gas whitening by first condensing and then heating
Publishdate：2018-05-16 Views：11
Recently, various regions have conducted research on "smoke dislocation" and introduced relevant policies and regulations. For example, Handan requires the use of "condensation before heating" technology to complete "whitening" by the end of October this year. Professor Dai Bin's research team from Shihezi University is dedicated to research in environmental catalysis. In close cooperation with Professor Dong Lin's research team from Nanjing University and Shihezi Tianfunan Thermal Power Co., Ltd., on the basis of the 863 project, a spherical denitration catalyst was reported to assist in "condensation followed by heating type white smoke reduction".
This method mainly involves condensing the desulfurized flue gas to eliminate white smoke and recover water resources, then heating the flue gas and using spherical manganese based composite metal oxides as catalysts to remove nitrogen oxides from the flue gas. It can be described as a win-win situation, as shown in Figure 1. The spherical manganese based composite metal oxide is prepared by spray drying, and has the characteristics of good fluidity, high specific surface area, different catalytic effects, etc. The prepared formed catalyst has a uniform coating and a denitrification efficiency of over 90% at 150 ℃.
This work was published in the renowned international journal Chemical Engineering Journal (CEJ), titled "Microspherical MnO2-CeO2-Al2O3 mixed oxide for monolithic honey comb catalyst and application in ive catalytic reduction of NOx with NH3 at 50-150 oC. DOI: 10.1016/j.cej.2018.04.033" (Figure 1). CEJ is an authoritative journal in the field of chemical engineering, with an impact factor (IF) of 6.216 in 2016. This research work received high praise from the reviewers, stating that MnOx CeO2-Al2O3 microspheres (MSs) were very interesting and kernel substantial for the low performance De NOx on monolithic honeycomb catalyst in this manuscript. The first author of the paper is Wang Chao, a master's student from the School of Chemistry and Chemical Engineering, and the corresponding authors are Associate Professors Yu Feng, Cao Peng, and Dai Bin.
Figure 1 shows the catalytic denitrification method of spherical catalyst and "condensation followed by heating to eliminate white smoke" (DOI: 10.1016/j.cej.2018.04.033).
The environmental catalysis research team mainly focuses on the prevention and control of air pollution, especially the elimination of nitrogen oxides, and is committed to developing new low-temperature/room temperature catalysts, catalyst molding, and catalytic denitrification processes. For example, the team introduced the self propagating method into the preparation of shaped catalysts and prepared them using a step-by-step method, as shown in Figure 2. The traditional method is to first prepare the catalyst carrier, then obtain the catalyst powder through impregnation, and then coat the catalyst powder on the surface of the cordierite ceramic carrier to prepare the formed catalyst. Compared with traditional molding methods, the self propagating combustion molding method has advantages such as simple process, uniform coating, and high denitrification efficiency, providing new ideas for the preparation of molding catalysts. The relevant work is based on "Synthesis of Both Powdered and Prepared MnOx CeO2 Al2O3 Catalysts by Self Propagating High Performance Synthesis for the Selective Catalyst Reduction of NOx with NH3." DOI: 10.1021/acsomega.7b01286, published in ACS Omega. The first author of the paper is Wang Chao, a master's student from the School of Chemistry and Chemical Engineering, and the corresponding author is Professor Dai Bin.
Figure 2: Preparation of shaped denitrification catalyst using self propagating method (DOI: 10.1021/acsomega.7b01286).
In addition, the research team also prepared manganese based composite oxide catalyst powders using self propagating combustion method. The related work was titled "High catalytic reduction of NOx by MnOx CeO2-Al2O3 catalyst prepared by self propagating high performance synthesis. DOI: 10.1016/j.js.2018.03.011" and published in the Journal of Environmental Science. The first author of the paper is Wang Chao, a master's student from the School of Chemistry and Chemical Engineering, and the corresponding author is Professor Dai Bin.
The above research work has been supported by projects such as the High Tech Research and Development Program (863 Program) (2015AA03A401), the Science and Technology Innovation Team of the Xinjiang Production and Construction Corps (2015BD003), and the Yangtze River Scholar and Innovation Team Development Program (IRT15R46).
Recently, various regions have conducted research on "smoke dislocation" and introduced relevant policies and regulations. For example, Handan requires the use of "condensation before heating" technology to complete "whitening" by the end of October this year. Professor Dai Bin's research team from Shihezi University is dedicated to research in environmental catalysis. In close cooperation with Professor Dong Lin's research team from Nanjing University and Shihezi Tianfunan Thermal Power Co., Ltd., on the basis of the 863 project, a spherical denitration catalyst was reported to assist in "condensation followed by heating type white smoke reduction".
This method mainly involves condensing the desulfurized flue gas to eliminate white smoke and recover water resources, then heating the flue gas and using spherical manganese based composite metal oxides as catalysts to remove nitrogen oxides from the flue gas. It can be described as a win-win situation, as shown in Figure 1. The spherical manganese based composite metal oxide is prepared by spray drying, and has the characteristics of good fluidity, high specific surface area, different catalytic effects, etc. The prepared formed catalyst has a uniform coating and a denitrification efficiency of over 90% at 150 ℃.
This work was published in the renowned international journal Chemical Engineering Journal (CEJ), titled "Microspherical MnO2-CeO2-Al2O3 mixed oxide for monolithic honey comb catalyst and application in ive catalytic reduction of NOx with NH3 at 50-150 oC. DOI: 10.1016/j.cej.2018.04.033" (Figure 1). CEJ is an authoritative journal in the field of chemical engineering, with an impact factor (IF) of 6.216 in 2016. This research work received high praise from the reviewers, stating that MnOx CeO2-Al2O3 microspheres (MSs) were very interesting and kernel substantial for the low performance De NOx on monolithic honeycomb catalyst in this manuscript. The first author of the paper is Wang Chao, a master's student from the School of Chemistry and Chemical Engineering, and the corresponding authors are Associate Professors Yu Feng, Cao Peng, and Dai Bin.
Figure 1 shows the catalytic denitrification method of spherical catalyst and "condensation followed by heating to eliminate white smoke" (DOI: 10.1016/j.cej.2018.04.033).
The environmental catalysis research team mainly focuses on the prevention and control of air pollution, especially the elimination of nitrogen oxides, and is committed to developing new low-temperature/room temperature catalysts, catalyst molding, and catalytic denitrification processes. For example, the team introduced the self propagating method into the preparation of shaped catalysts and prepared them using a step-by-step method, as shown in Figure 2. The traditional method is to first prepare the catalyst carrier, then obtain the catalyst powder through impregnation, and then coat the catalyst powder on the surface of the cordierite ceramic carrier to prepare the formed catalyst. Compared with traditional molding methods, the self propagating combustion molding method has advantages such as simple process, uniform coating, and high denitrification efficiency, providing new ideas for the preparation of molding catalysts. The relevant work is based on "Synthesis of Both Powdered and Prepared MnOx CeO2 Al2O3 Catalysts by Self Propagating High Performance Synthesis for the Selective Catalyst Reduction of NOx with NH3." DOI: 10.1021/acsomega.7b01286, published in ACS Omega. The first author of the paper is Wang Chao, a master's student from the School of Chemistry and Chemical Engineering, and the corresponding author is Professor Dai Bin.
Figure 2: Preparation of shaped denitrification catalyst using self propagating method (DOI: 10.1021/acsomega.7b01286).
In addition, the research team also prepared manganese based composite oxide catalyst powders using self propagating combustion method. The related work was titled "High catalytic reduction of NOx by MnOx CeO2-Al2O3 catalyst prepared by self propagating high performance synthesis. DOI: 10.1016/j.js.2018.03.011" and published in the Journal of Environmental Science. The first author of the paper is Wang Chao, a master's student from the School of Chemistry and Chemical Engineering, and the corresponding author is Professor Dai Bin.
The above research work has been supported by projects such as the High Tech Research and Development Program (863 Program) (2015AA03A401), the Science and Technology Innovation Team of the Xinjiang Production and Construction Corps (2015BD003), and the Yangtze River Scholar and Innovation Team Development Program (IRT15R46).
