Structure of CuO/Al<sub>2</sub>O<sub>3</sub>-MgO catalyst modified by ultrasound assisted dispersion and its catalytic performance in the combustion of lean methane

CHEN Yan-rong; LI Hao-jie; YANG Zhong-qing; FAN Hu

Volume 43 Issue 01

Jan. 2015

Turn off MathJax

Article Contents

Article Navigation > Journal of Fuel Chemistry and Technology > 2015 > 43(01): 122-128

CHEN Yan-rong, LI Hao-jie, YANG Zhong-qing, FAN Hu. Structure of CuO/Al2O3-MgO catalyst modified by ultrasound assisted dispersion and its catalytic performance in the combustion of lean methane[J]. Journal of Fuel Chemistry and Technology, 2015, 43(01): 122-128.

Citation:

CHEN Yan-rong, LI Hao-jie, YANG Zhong-qing, FAN Hu. Structure of CuO/Al₂O₃-MgO catalyst modified by ultrasound assisted dispersion and its catalytic performance in the combustion of lean methane[J]. Journal of Fuel Chemistry and Technology, 2015, 43(01): 122-128.

Citation:

PDF( 2966 KB)

Structure of CuO/Al₂O₃-MgO catalyst modified by ultrasound assisted dispersion and its catalytic performance in the combustion of lean methane

1.
Key Laboratory of Low-grade Energy Utilization Technologies and Systems, Chongqing University, Chongqing 400030, China;
2.
Youshui Hydropower Exploiture Corporation of Chongqing, Chongqing 409809, China

Received Date: 2014-06-09
Rev Recd Date: 2014-09-05
Publish Date: 2015-01-30

Abstract

Abstract

CuO/Al₂O₃-MgO catalyst was prepared by ultrasound assisted dispersion and used in the catalytic combustion of lean methane. The CuO/Al₂O₃-MgO catalyst was characterized by SEM, XRD, XPS, and H₂-TPR and the effect of ultrasonic modification on the structure and catalytic performance was investigated. The results showed that the activity of the CuO/Al₂O₃-MgO catalyst prepared by ultrasonic treatment is much higher than that prepared by the conventional impregnation method. The catalytic activity of CuO/Al₂O₃-MgO is related to both the ultrasonic time and power; the optimum ultrasonic time and power are 20 min and 150 W, respectively. Compared with the conventional impregnation, the ultrasonic modification is propitious to get a catalyst with higher surface area and pore volume, smaller particles, and higher dispersion of active Cu species. Moreover, the ultrasonic modification may promote the formation of Cu⁺ on the catalyst surface and improve the low temperature reducibility. All these can depress the activation energy and enhance the activity of the CuO/Al₂O₃-MgO catalyst in methane oxidation.
- ultrasound,
- modification,
- CuO/Al₂O₃-MgO,
- lean methane,
- catalytic combustion

FullText(HTML)

References(20)

References

张力, 张俊广, 杨仲卿, 唐强. 超低浓度甲烷在 Cu/γ-Al₂O₃催化颗粒流化床中的燃烧特性[J]. 燃料化学学报, 2012, 40(7): 886-891.(ZHANG Li, ZHANG Jun-guang, YANG Zhong-qing, TANG Qiang. Combustion characteristics of ultra-low content methane in a fluidized bed reactor with Cu/γ-Al₂O₃ as catalytic particles[J]. J Fuel Chem Technol, 2012, 40(7): 886-891.)

HU J B, YU C L, BI Y D. Preparation and characterization of Ni/CeO₂-SiO₂ catalysts andtheirperformance in catalytic partial oxidation of methane to syngas[J]. Chin J Catal, 2014, 35(1): 8-20.

王越, 张佳瑾, 李敏, 李建伟. 铜锰负载型堇青石整体催化剂表面低浓度甲烷催化燃烧本征动力学研究[J]. 北京化工大学学报, 2011, 38(6): 1-4.(WANG Yue, ZHANG Jia-jin, LI Min, LI Jian-wei. Intrinsic kinetics of lean methane catalytic combustion over a Cu-Mn/cordierite catalyst[J]. J Beijing Univ Chem Technol, 2011, 38(6):1-4.)

YANG Z,GRACE J R. Combustion of low-concentration coal bed methane in a fluidized bed reactor[J]. Energy Fuels, 2011, 25(3): 975-980.

张佳瑾, 李建伟, 朱吉钦, 王越, 陈标华. 助剂对 Cu-Mn 复合氧化物整体式催化剂催化低浓度甲烷燃烧反应性能的影响[J]. 催化学报, 2011, 32(8): 1380-1386.(ZHANG Jia-jin, LI Jian-wei, ZHU Ji-qin, WANG Yue, CHEN Biao-hua. Effect of promoter on the performance of Cu-Mn complex oxide monolithic catalysts for lean methane catalytic combustion[J]. Chin J Catal, 2011, 32(8): 1380-1386.)

郭章龙, 黄丽琼, 储伟. 助剂对NiMgAl催化剂的结构和甲烷二氧化碳重整反应性能的影响[J]. 物理化学学报, 2014, 30(4): 723-728.(GUO Zhang-long, HUANG Li-qiong, CHU Wei. Effects of promoter on NiMgAl catalyst structure and performance for carbon dioxide reforming of methane[J]. Acta Phys-Chim Sin, 2014, 30(4): 723-728.)

YUAN X Z, CHEN S Y, CHEN H, ZHANG Y C. Effect of Ce addition on Cr/γ-Al₂O₃ catalysts for methane catalytic combustion[J]. Catal Commun, 2013, 35(5): 36-39.

GUO W L, LI H L, JI G L, ZHANG G Y. Ultrasound-assisted production of biodiesel from soybean oil using Bronsted acidic ionic liquid as catalyst[J]. Bioresour Technol, 2012, 125(12): 332-334.

BYEON J H, KIM Y W. Ultrasound-assisted copper deposition on a polymer membrane and application for methanol steam reforming[J]. Ultrason Sonochem, 2013, 20(1): 472-477.

ABDOLLAHIFAR M, HAGHIGHI M, BABALUO A A. Syngas production via dry reforming of methane over Ni/Al₂O₃-MgO nanocatalyst synthesized using ultrasound energy[J]. J Ind Eng Chem, 2014, 20(4): 1845-1851.

ALLAHYARI S, HAGHIGHI M, EBADI A, HOSSEINZADEH S. Ultrasound assisted co-precipitation of nanostructured CuO-ZnO-Al₂O₃ over HZSM-5: Effect of precursor and irradiation power on nanocatalyst properties and catalytic performance for direct syngas to DME[J]. Ultrason Sonochem, 2014, 21(2):663-673.

KHOSHBIN R, HAGHIGHI M. Direct syngas to DME as a clean fuel: The beneficial use of ultrasound for the preparation of CuO-ZnO-Al₂O₃/HZSM-5 nanocatalyst[J]. Chem Eng Res Des, 2013, 91(6): 1111-1122.

邱业君, 陈吉祥, 张继炎. MgO助剂对甲烷部分氧化Ni /Al₂O₃催化剂结构和性能的影响[J]. 燃料化学学报, 2006, 34(4): 450-455.(QIU Ye-jun, CHEN Ji-xiang, ZHANG Ji-yan. Effects of MgO promoter on properties of Ni/Al₂O₃ catalysts for partial oxidation of methane to syngas[J]. J Fuel Chem Technol, 2006, 34(4): 450-455.)

刘静, 李春梅, 霍晓敏, 石雷, 孙琪. 吲哚的直接气相合成: MgO助剂对Cu/SiO₂催化剂性能的影响[J].催化学报, 2008, 29(2): 159-162.(LIU Jing, LI Chun-mei, HUO Xiao-min, SHI Lei, SUN Qi. Direct vapor-phase synthesis of indole: Effect of MgO on the performance of Cu/SiO₂ catalyst[J]. Chin J Catal, 2008, 29(2): 159-162.)

张存, 马春艳, 刘晓勤. 超声促进浸渍法制备WO₃/ZrO₂固体超强酸催化剂[J]. 四川大学学报, 2009, 41(6): 84-88.(ZHANG Cun, MA Chun-yan, LIU Xiao-qin. Preparation of WO₃/ZrO₂ solid superacid catalysts by ultrasonic impregnation[J]. J Sichuan Univ, 2009, 41(6): 84-88.)

MOSADDEGH E. Ultrasonic-assisted preparation of nano eggshell powder: A novel catalyst in green and high efficient synthesis of 2-aminochromenes[J]. Ultrason Sonochem, 2013, 20(6):1436-1441.

LUO J J, XUA H, LIU Y F. A facile approach for the preparation of biomorphic CuO-ZrO₂ catalyst for catalytic combustion of methane[J]. Appl Catal A: Gen, 2012, 424(7): 121-129.

陈婕, 胡瑞生, 胡佳楠, 卢天竹. 新型La₂CuMnO₆和LaMnO₃催化剂的甲烷燃烧催化性能比较[J]. 高等学校化学学报, 2011, 32(10): 2396-2401.(CHEN Jie, HU Rui-sheng, HU Jia-nan, LU Tian-zu. Catalytic performance comparison of the novel catalyst La₂CuMnO₆ and LaMnO₃ for methane combustion[J]. Chem J Chin Univ, 2011, 32(10): 2396-2401.)

BELESSI V C, LADAVOS A K, POMONIS P J. Methane combustion on La-Sr-Ce-Fe-O mixed oxides: Bifunctional synergistic action of SrFeO_3-_x and CeO_x phases[J]. Appl Catal B: Environ, 2001, 31(3): 183-187.

ABBASI R, WU L, WANKE S E. Kinetics of methane combustion over Pt and Pt-Pd catalysts[J]. Chem Eng Res Des, 2012, 90(11): 1930-1942.

Relative Articles

Supplements(0)

Cited By

Proportional views