NO Reduction Reaction by Kiwi Biochar-Modified MnO2 Denitrification Catalyst: Redox Cycle and Reaction Process

NO is a major environmental pollutant. MnO2 is often used as a denitrification catalyst with poor N2 selectivity and weak SO2 resistance. Kiwi twig biochar was chosen to modify MnO2 samples by using the hydrothermal method. The NO conversion rates of the biochar-modified samples were >90% at 125–225 °C. Kiwi twig biochar made the C2MnO2 sample with a larger specific surface area, a higher number of acidic sites and Oβ/Oα molar ratio, leading to more favorable activity at high temperatures and better SO2 resistance. Moreover, the inhibition of the NH3 oxidation reaction and the Mn3+ → Mn4+ process played a crucial role in the redox cycle. What was more, Brønsted acidic sites present on the C1MnO2 sample participate in the reaction more rapidly. This study identified the role of biochar in the reaction process and provides a reference for the wide application of biochar.

[1]  Fahua Zhu,et al.  Investigation on the ammonia emission characteristics in coal-fired power plants of China , 2022, Fuel.

[2]  Zhenxing Shen,et al.  Kiwi twig biochar recycling promoting the reduction of NO by a MnO2 catalyst , 2022, Applied Surface Science.

[3]  N. Bion,et al.  Insight into the praseodymium effect on the NH3-SCR reaction pathways over W or Nb supported ceria-zirconia based catalysts , 2021 .

[4]  Y. Duan,et al.  Removal characteristics of particulate matters and hazardous trace elements in a 660 MW ultra-low emission coal-fired power plant , 2021, Fuel.

[5]  S. Rohani,et al.  Influence of phosphorus on the NH3-SCR performance of CeO2-TiO2 catalyst for NOx removal from co-incineration flue gas of domestic waste and municipal sludge. , 2021, Journal of colloid and interface science.

[6]  Liqing Li,et al.  Natural Honeycomb-like structure cork carbon with hierarchical Micro-Mesopores and N-containing functional groups for VOCs adsorption , 2021 .

[7]  Yihui Zou,et al.  Environmental life cycle assessment of supercapacitor electrode production using algae derived biochar aerogel , 2021, Biochar.

[8]  Weizao Liu,et al.  Effects of Sm modification on biochar supported Mn oxide catalysts for low-temperature NH3-SCR of NO , 2021 .

[9]  Shijie Yuan,et al.  Facile and scalable synthesis of high-quality few-layer graphene from biomass by a universal solvent-free approach , 2021 .

[10]  Takashi Toyao,et al.  Analogous Mechanistic Features of NH3-SCR over Vanadium Oxide and Copper Zeolite Catalysts , 2021, ACS Catalysis.

[11]  Xinxiang Pan,et al.  Enhancement effects of Er modification on comprehensive performance of FeMn/TiO2 catalysts for selective reduction of NO with NH3 at low temperature , 2021, Journal of Environmental Chemical Engineering.

[12]  Zongli Xie,et al.  Evolution mechanism of transition metal in NH3-SCR reaction over Mn-based bimetallic oxide catalysts: Structure-activity relationships. , 2021, Journal of hazardous materials.

[13]  P. Lu,et al.  Impact of toluene poisoning on MnCe/HZSM-5 SCR catalyst , 2021 .

[14]  Xiaojiang Yao,et al.  Insights into the co-doping effect of Fe3+ and Zr4+ on the anti-K performance of CeTiOx catalyst for NH3-SCR reaction. , 2021, Journal of hazardous materials.

[15]  A. Gross,et al.  In Search of the Active Sites for the Selective Catalytic Reduction on Tungsten-Doped Vanadia Monolayer Catalysts supported by TiO2 , 2021, ACS Catalysis.

[16]  Guodong Zhang,et al.  A strategy for constructing highly efficient yolk-shell Ce@Mn@TiOx catalyst with dual active sites for low-temperature selective catalytic reduction of NO with NH3 , 2021 .

[17]  Y. Xing,et al.  Thulium modified MnOx/TiO2 catalyst for the low-temperature selective catalytic reduction of NO with ammonia , 2021 .

[18]  Hong-bo Hu,et al.  Facile preparation of multi-porous biochar from lotus biomass for methyl orange removal: Kinetics, isotherms, and regeneration studies. , 2021, Bioresource technology.

[19]  Daniel C W Tsang,et al.  Valorization of humins from food waste biorefinery for synthesis of biochar-supported Lewis acid catalysts. , 2021, The Science of the total environment.

[20]  Shule Zhang,et al.  Insight into the reaction mechanism over PMoA for low temperature NH3-SCR: A combined In-situ DRIFTs and DFT transition state calculations. , 2021, Journal of hazardous materials.

[21]  Jiaxiu Guo,et al.  Enhancement of Ce doped La–Mn oxides for the selective catalytic reduction of NOx with NH3 and SO2 and/or H2O resistance , 2021 .

[22]  Kuo Liu,et al.  Microkinetic study of NO oxidation, standard and fast NH3-SCR on CeWO at low temperatures , 2021 .

[23]  Wenju Jiang,et al.  Highly efficient MnOx/biochar catalysts obtained by air oxidation for low-temperature NH3-SCR of NO , 2021 .

[24]  P. Lu,et al.  Activity enhancement of acetate precursor prepared on MnOx-CeO2 catalyst for low-temperature NH3-SCR: Effect of gaseous acetone addition , 2020 .

[25]  Dingsheng Wang,et al.  A MnO2-based catalyst with H2O resistance for NH3-SCR: Study of catalytic activity and reactants-H2O competitive adsorption , 2020 .

[26]  M. Crocker,et al.  Investigation into the Catalytic Roles of Various Oxygen Species over Different Crystal Phases of MnO2 for C6H6 and HCHO Oxidation , 2020 .

[27]  Y. Niu,et al.  New insight into N2O formation from NH3 oxidation over MnO /TiO2 catalyst , 2019, Fuel.

[28]  T. Liu,et al.  A unit-based emission inventory of SO2, NOx and PM for the Chinese iron and steel industry from 2010 to 2015. , 2019, The Science of the total environment.

[29]  M. Kong,et al.  Low-temperature SCR of NO with NH3 over biomass char supported highly dispersed Mn Ce mixed oxides , 2019, Journal of the Energy Institute.

[30]  James A. Anderson,et al.  Multiple strategies to decrease ignition temperature for soot combustion on ultrathin MnO2- nanosheet array , 2019, Applied Catalysis B: Environmental.

[31]  Changjin Tang,et al.  Effect of Ti4+ and Sn4+ co-incorporation on the catalytic performance of CeO2-MnO catalyst for low temperature NH3-SCR , 2019, Applied Surface Science.

[32]  Lin Dong,et al.  Morphology and Crystal-Plane Effects of CeO2 on TiO2/CeO2 Catalysts during NH3-SCR Reaction , 2018, Industrial & Engineering Chemistry Research.

[33]  Xinyong Li,et al.  A new type Ni-MOF catalyst with high stability for selective catalytic reduction of NOx with NH3 , 2018, Catalysis Communications.

[34]  P. Hu,et al.  Insight into the NH3-Assisted Selective Catalytic Reduction of NO on β-MnO2(110): Reaction Mechanism, Activity Descriptor, and Evolution from a Pristine State to a Steady State , 2018, ACS Catalysis.

[35]  Chunhua Han,et al.  Capacitance and voltage matching between MnO2 nanoflake cathode and Fe2O3 nanoparticle anode for high-performance asymmetric micro-supercapacitors , 2017, Nano Research.

[36]  Minhua Zhang,et al.  MOF-74 as an Efficient Catalyst for the Low-Temperature Selective Catalytic Reduction of NOx with NH3. , 2016, ACS applied materials & interfaces.

[37]  S. Nanda,et al.  Raman spectrum of graphene with its versatile future perspectives , 2016 .

[38]  N. Yan,et al.  Different crystal-forms of one-dimensional MnO2 nanomaterials for the catalytic oxidation and adsorption of elemental mercury. , 2015, Journal of hazardous materials.

[39]  G. Lu,et al.  A Highly Effective Catalyst of Sm-MnOx for the NH3-SCR of NOx at Low Temperature: Promotional Role of Sm and Its Catalytic Performance , 2015 .

[40]  Junlin Xie,et al.  Identification of MnOx species and Mn valence states in MnOx/TiO2 catalysts for low temperature SCR , 2015 .

[41]  A. Pal,et al.  Microporous assembly of MnO2 nanosheets for malachite green degradation , 2014 .

[42]  Zuotai Zhang,et al.  In situ DRIFTS investigation on the SCR of NO with NH3 over V2O5 catalyst supported by activated semi-coke , 2014 .

[43]  J. Qiu,et al.  Graphene Sheets from Graphitized Anthracite Coal: Preparation, Decoration, and Application , 2012 .

[44]  T. Tseng,et al.  Gaseous Nitrogen Oxides Stimulate Cell Cycle Progression by Rubidium Phosphorylation via Activation of Cyclins/Cdks , 2003 .

[45]  Han-Yi Chen,et al.  MnO2 cathode materials with the improved stability via nitrogen doping for aqueous zinc-ion batteries , 2022 .