CuxMn1-xCe0.75Zr0.25Oy催化降解甲苯的性能

杨德宇; 郝庆兰; 赵晨晨; 闫宁娜; 豆宝娟

doi:10.13205/j.hjgc.202101014

Cu_xMn_1-xCe_0.75Zr_0.25O_y催化降解甲苯的性能

doi: 10.13205/j.hjgc.202101014

天津科技大学化工与材料学院, 天津 300457

基金项目:

国家自然科学基金项目（51776216）。

详细信息

作者简介:
杨德宇(1992-),男,硕士,主要研究方向为多相催化。947651527@qq.com

通讯作者:
豆宝娟(1982-),女,博士,副教授,主要研究方向为VOCs污染控制。bjdou@tust.edu.cn

计量
- 文章访问数: 298
- HTML全文浏览量: 112
- PDF下载量: 6
- 被引次数: 0
出版历程
- 收稿日期: 2020-03-06
- 网络出版日期: 2021-04-23

CATALYTIC DEGRADATION PERFORMANCE OF TOLUENE OVER Cu_xMn_1-xCe_0.75Zr_0.25O_y

College of Chemical Engineering and Materials Science, Tianjin University of Science & Technology, Tianjin 300457, China

摘要

摘要: 采用溶胶凝胶法制备了双主金属、双助剂的Cu_xMn_1-xCe_0.75Zr_0.25O_y催化剂，在固定床反应器中评价了催化剂降解甲苯的性能，并采用XRD、H₂-TPR、O₂-TPD和Raman对催化剂进行表征。试验结果表明：催化剂中Cu含量的增加有助于增强Cu-Ce金属之间的相互作用，增加催化剂中的氧空位浓度和晶格氧含量，提高催化剂低温还原性，从而促进催化活性的提高。Cu₁CeZr催化剂降解甲苯活性最好，其完全降解甲苯的温度（T₁₀₀）为220℃，比Mn₁CeZr催化剂低60℃。
- Ce-Zr /
- Cu /
- Mn /
- 溶胶凝胶法 /
- 催化降解 /
- 甲苯
Abstract: A series of bimetallic and biassistant Cu_xMn_1-xCe_0.75Zr_0.25O_y catalysts were prepared by sol-gel method. The catalytic degradation performance of toluene over the catalysts was tested in a fixed-bed reactor. The relationships between the catalytic activity of toluene degradation and catalyst structure were explored by XRD, H₂-TPR, O₂-TPD and Raman methods. It was found that the increase of copper content could enhance the interaction between Cu-Ce, and improve the oxygen vacancy concentration, lattice oxygen content and low temperature reducibility, thus promote the catalytic activity. Cu₁CeZr catalyst exhibited the best activity for toluene degradation, and the temperature of complete degradation of toluene was 220℃, which was 60℃ lower than that of Mn₁CeZr catalyst.
- Ce-Zr /
- Cu /
- Mn /
- sol-gel method /
- catalytic degradation /
- toluene

HTML全文

参考文献(21)

AZALIM S, FRANCO M, BRAHMI R, et al. Removal of oxygenated volatile organic compounds by catalytic oxidation over Zr-Ce-Mn catalysts[J]. Journal of Hazardous Materials, 2011, 88(1/2/3):422-427.

LI S M, HAO Q L, ZHAO R Z, et al. Highly efficient catalytic removal of ethyl acetate over Ce/Zr promoted copper/ZSM-5 catalysts[J]. Chemical Engineering Journal, 2016, 285(1):536-543.

DENG Q F, REN T Z, AGULA B, et al. Mesoporous Ce_xZr_1-xO₂ solid solutions supported CuO nanocatalysts for toluene total oxidation[J]. Journal of Industrial and Engineering Chemistry, 2014, 20(5):3303-3312.

HOU Z Y, FENG J, LIN T, et al. The performance of manganese-based catalysts with Ce_0.65Zr_0.35O₂ as support for catalytic oxidation of toluene[J]. Applied Surface Science, 2017, 434:82-90.

KANG R N, WEI X L, LI H X, et al. Sol-gel enhanced mesoporous Cu-Ce-Zr catalyst for toluene oxidation[J]. Combustion Science and Technology, 2018, 190(5):878-892.

TANG X L, ZHANG B C, LI Y, et al. Carbon monoxide oxidation over CuO/CeO₂ catalysts[J]. Catalysis Today, 2004, 93/94/95:191-198.

GUO X L, LI J, ZHOU R X. Catalytic performance of manganese doped CuO-CeO₂ catalysts for selective oxidation of CO in hydrogen-rich gas[J]. Fuel, 2016, 163:56-64.

廖伟平,杨柳,王飞,等. 不同制备方法的Mn-Ce催化剂低温SCR性能研究[J].化学学报, 2011, 69(22):2723-2728.

汤清虎,吴成明,黄晓娜,等. 非晶态Mn-Ce-O催化芳香醇选择氧化[J].催化学报, 2009, 30(3):207-212.

LU H F, KONG X X, HUAN H F, et al. Cu-Mn-Ce ternary mixed-oxide catalysts for catalytic combustion of toluene[J]. Journal of Environmental Sciences, 2015, 32:102-107.

OKUMURA K, KOBAYASHI T, TANAKA H, et al. Toluene combustion over palladium supported on various metal oxide supports[J]. Applied Catalysis B:Environmental, 2003, 44:325-331.

PIUMETTI M, FINO D, RUSSO N. Mesoporous manganese oxides prepared by solution combustion synthesis as catalysts for the total oxidation of VOCs[J]. Applied Catalysis B:Environmental, 2015, 163:277-287.

SCIRE S, MINICO S, CRISAFULLI C. Catalytic combustion of volatile organic compounds on gold/cerium oxide catalysts[J]. Applied Catalysis B:Environmental, 2003, 40(1):43-49.

RIVAS B, LÓPEZ-FONSECA R, GUTIÉRREZ-ORTIZ M Á, et al. Combustion of chlorinated VOCs using κ-CeZrO₄ catalysts[J]. Catal Today, 2011,176(1):470-473.

ZABILSKIY M, ERJAVEC B, DJINOVIĆ, P, et al. Ordered mesoporous CuO-CeO₂ mixed oxides as an effective catalyst for N₂O decomposition[J]. Chemical Engineering Journal, 2014, 254:153-162.

LUO Y J, QIAN Q R, CHEN Q H. On the promoting effect of the addition of Ce_xZr_1-xO₂ to palladium based alumina catalysts for methanol deep oxidation[J]. Materials Research Bulletin, 2015, 62:65-70.

SANTOS V P, PEREIRA M F R, ÓRFO J J M, et al. The role of lattice oxygen on the activity of manganese oxides towards the oxidation of volatile organic compounds[J]. Applied Catalysis B:Environmental, 2010, 99(1/2):353-363.

NIU J R, QIAN H L, LIU J, et al. Process and mechanism of toluene oxidation using Cu_1-yMn₂Ce_yO_x/sepiolite prepared by the co-precipitation method[J]. Journal of Hazardous Materials, 2018, 357:332-340.

ZHOU G L, LAN H, GAO T T, et al. Influence of Ce/Cu ratio on the performance of ordered mesoporous CeCu composite oxide catalysts[J]. Chemical Engineering Journal, 2014, 246:53-63.

LANDI G, BARBATO P S, DI BENEDETTO A, et al. Optimization of the preparation method of CuO/CeO₂ structured catalytic monolith for CO preferential oxidation in H₂-rich streams[J]. Applied Catalysis B:Environmental, 2016, 181:727-737.

HE C, XU B T, SHI J W, et al. Catalytic destruction of chlorobenzene over mesoporous ACeO_x (A=Co, Cu, Fe, Mn, or Zr) composites prepared by inorganic metal precursor spontaneous precipitation[J]. Fuel Processing Technology, 2015, 130:179-187.

施引文献

资源附件(0)

访问统计