Designed copper–amine complex as an efficient template for one-pot synthesis of Cu-SSZ-13 zeolite with excellent activity for selective catalytic reduction of NOx by NH3

2011 ◽  
Vol 47 (35) ◽  
pp. 9789 ◽  
Author(s):  
Limin Ren ◽  
Longfeng Zhu ◽  
Chengguang Yang ◽  
Yanmei Chen ◽  
Qi Sun ◽  
...  
Keyword(s):  
Selective Catalytic Reduction ◽  
Catalytic Reduction ◽  
One Pot ◽  
One Pot Synthesis ◽  
Excellent Activity ◽  
Amine Complex ◽  
Reduction Of Nox ◽  
Copper Amine

scholarly journals A CeO2/ZrO2-TiO2 Catalyst for the Selective Catalytic Reduction of NOx with NH3

Catalysts ◽  
2018 ◽  
Vol 8 (12) ◽  
pp. 592 ◽  
Author(s):  
Wenpo Shan ◽  
Yang Geng ◽  
Yan Zhang ◽  
Zhihua Lian ◽  
Hong He
Keyword(s):  
Selective Catalytic Reduction ◽  
Ph Value ◽  
Catalytic Reduction ◽  
Space Velocity ◽  
Catalytic Performance ◽  
Excellent Activity ◽  
Reduction Of Nox ◽  
High Space ◽  
Catalytic Performances ◽  
High Space Velocity

In this study, CeZr0.5TiaOx (with a = 0, 1, 2, 5, 10) catalysts were prepared by a stepwise precipitation approach for the selective catalytic reduction of NOx with NH3. When Ti was added, all of the Ce-Zr-Ti oxide catalysts showed much better catalytic performances than the CeZr0.5Ox. Particularly, the CeZr0.5Ti2Ox catalyst showed excellent activity for broad temperature range under high space velocity condition. Through the control of pH value and precipitation time during preparation, the function of the CeZr0.5Ti2Ox catalyst could be controlled and the structure with highly dispersed CeO2 (with redox functions) on the surface of ZrO2-TiO2 (with acidic functions) could be obtained. Characterizations revealed that the superior catalytic performance of the catalyst is associated with its outstanding redox properties and adsorption/activation functions for the reactants.

Excellent activity and selectivity of Cu-SSZ-13 in the selective catalytic reduction of NOx with NH3

2010 ◽  
Vol 275 (2) ◽  
pp. 187-190 ◽  
Author(s):  
Ja Hun Kwak ◽  
Russell G. Tonkyn ◽  
Do Heui Kim ◽  
János Szanyi ◽  
Charles H.F. Peden
Keyword(s):  
Selective Catalytic Reduction ◽  
Catalytic Reduction ◽  
Excellent Activity ◽  
Reduction Of Nox

scholarly journals Excellent Performance of One-Pot Synthesized Cu-SSZ-13 Catalyst for the Selective Catalytic Reduction of NOx with NH3

2013 ◽  
Vol 48 (1) ◽  
pp. 566-572 ◽  
Author(s):  
Lijuan Xie ◽  
Fudong Liu ◽  
Limin Ren ◽  
Xiaoyan Shi ◽  
Feng-Shou Xiao ◽  
...  
Keyword(s):  
Selective Catalytic Reduction ◽  
Catalytic Reduction ◽  
Excellent Performance ◽  
One Pot ◽  
Reduction Of Nox

scholarly journals Correction: Excellent performance of one-pot synthesized Fe-containing MCM-22 zeolites for the selective catalytic reduction of NOx with NH3

2020 ◽  
Vol 10 (21) ◽  
pp. 7399-7399
Author(s):  
Jialing Chen ◽  
Gang Peng ◽  
Wei Zheng ◽  
Wenbo Zhang ◽  
Li Guo ◽  
...  
Keyword(s):  
Selective Catalytic Reduction ◽  
Catalytic Reduction ◽  
Excellent Performance ◽  
One Pot ◽  
Reduction Of No ◽  
Reduction Of Nox

Correction for ‘Excellent performance of one-pot synthesized Fe-containing MCM-22 zeolites for the selective catalytic reduction of NOx with NH3’ by Jialing Chen et al., Catal. Sci. Technol., 2020, 10, 6583–6598, DOI: 10.1039/D0CY00989J.

scholarly journals Ion Exchange of One-Pot Synthesized Cu-SAPO-44 with NH4NO3 to Promote Cu Dispersion and Activity for Selective Catalytic Reduction of NOx with NH3

Catalysts ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 882 ◽  
Author(s):  
Nana Zhang ◽  
Ying Xin ◽  
Qian Li ◽  
Xicheng Ma ◽  
Yongxin Qi ◽  
...  
Keyword(s):  
Electron Microscope ◽  
Ion Exchange ◽  
Selective Catalytic Reduction ◽  
Inductively Coupled Plasma ◽  
Catalytic Reduction ◽  
One Pot ◽  
X Ray ◽  
Inductively Coupled ◽  
Nh3 Scr ◽  
Reduction Of Nox

Cu-containing CHA type (Cu-CHA) zeolites have been widely investigated owing to their excellent low-temperature activity and high hydrothermal stability in selective catalytic reduction of NOx with NH3 (NH3-SCR). Herein, a series of Cu-SAPO-44 zeolites were prepared by one-pot method with dual-amine templates and the subsequent ion exchange (IE) with NH4NO3. The effect of NH4NO3 treatment on Cu species was investigated by X-ray powder diffraction (XRD), N2 adsorption-desorption isotherm, inductively coupled plasma (ICP); field-emission scanning electron microscope (FE-SEM), high-resolution transmission electron microscope (HRTEM), X-ray absorption fine structure (XAFS), and H2-temperature-programmed reduction (H2-TPR). The results indicated that—besides the main SAPO-44 structure—the CuO phase was detected by XRD in original samples. After IE with NH4NO3, the Cu contents decreased greatly from ICP analysis. The removal of CuO agglomerations and the presence of highly dispersed CuO nanoparticles (~2.36 nm) were confirmed by SEM, TEM and H2-TPR. Furthermore, a significant increase in the proportion of isolated Cu2+ was derived from XAFS. As a result, the activity at higher temperature (≥350 °C) was improved a lot.

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