Catalytic Oxidation of Soluble Organic Fraction in Diesel Exhausts Using Composite Oxides (CeO&lt;sub&gt;2&lt;/sub&gt;)&lt;em&gt;&lt;sub&gt;x&lt;/sub&gt;&lt;/em&gt;(La-Al&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;3&lt;/sub&gt;)&lt;sub&gt;1-&lt;em&gt;x&lt;/em&gt;&lt;/sub&gt;

Chen, Yongdong; Wang, Lei; Xiao-Xu, GUAN; Yong-Bing, LIU; Gong, Maochu; Chen, Yaoqiang

doi:10.3866/pku.whxb201303051

Cited by 5 publications

(2 citation statements)

References 20 publications

(24 reference statements)

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“…负载钒氧化物催化剂上的 CO2 氧化乙苯脱氢反应遵循 Mars-van Krevelen 氧化还原机理, CeO2具有易氧化还原性, 可以很快达到 Ce 4+ /Ce 3+ 平衡, 因此它可以在富氧条件下贮存氧, 而在贫氧条件下释放氧. 23 由于具有优良的储放氧功能, CeO2被广泛用作催化剂的结构助剂和电子助剂以提高催化剂性能, [24][25][26][27] 并且对 CO2 也有良好的活化作用. 28 [31][32][33] Ce 3d5/2 的结合能为 882.2 eV, 归属为 Ce 4 + 物种.…”

Section: 引言unclassified

Effect of Ce Promoter on Catalytic Performance of V/SiO2 in Oxidative Dehydrogenation of Ethylbenzene with Carbon Dioxide

Hai-Xin¹,

Chen²,

Xing-Yu³

et al. 2014

Acta Physico-Chimica Sinica

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The effect of a Ce promoter on the catalytic properties of V/SiO2 was investigated for the oxidative dehydrogenation of ethylbenzene (EB) to styrene (ST) with CO2 (CO2-ODEB). The catalysts were characterized by nitrogen adsorption, X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), H2 temperature-programmed reduction (H2-TPR), CO2 temperature-programmed desorption (CO2-TPD), and thermogravimetric analyses (TGA). It was found that incorporation of Ce into V/SiO2 increased the dispersion of active V species, enhanced the redox properties of the system, and inhibited deep V reduction of V 5 + to V 3 +. The Ce promoter also improves the basicity of V/SiO2 and CO2 adsorption on the catalyst, and suppresses coke formation. The addition of a Ce promoter greatly improves the catalytic activity and stability of V/SiO2 towards CO2-ODEB. The ST yield and selectivity reach 55.6% and 98.5% , respectively, for CO2-ODEB over the most efficient catalyst, V(0.8)Ce(0.25)/SiO2, at 550°C, and a CO2/EB molar ratio of 20. Moreover, after reaction for 12 h, the V(0.8)Ce(0.25)/SiO2 still shows stable catalytic

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Section: 引言unclassified

Effect of Ce Promoter on Catalytic Performance of V/SiO2 in Oxidative Dehydrogenation of Ethylbenzene with Carbon Dioxide

Hai-Xin¹,

Chen²,

Xing-Yu³

et al. 2014

Acta Physico-Chimica Sinica

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“…In our previous works, 12,13 we mainly focused on the efficient purification of CO and hydrocarbons (HCs) in the gas, and few researchers in the field of DOC 5,6 are concerned about the purification of the SOF. Recently Chen and co-workers 14 employed a series of (CeO 2 ) x -(La-Al 2 O 3 ) 1-x on the combustion of the SOF and Zhang et al 15 studied the influence of Ce 0.6 Zr 0.4 O 2 solid solution prepared by different kinds of methods on the oxidation of SOF.…”

Section: Introductionmentioning

confidence: 99%

Influence of La on CeO2-ZrO2 Catalyst for Oxidation of Soluble Organic Fraction from Diesel Exhaust

Yang

四川大学化学学院²,

Yang³

et al. 2015

Acta Physico-Chimica Sinica

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摘要: 采用共沉淀法分别制备CeO 2 -ZrO 2 (质量比60 : 40)和CeO 2 -ZrO 2 -La 2 O 3 (质量比60 : 30 : 10)催化剂. 利用热重-差热分析(TG-DTA)对柴油车尾气中可溶性有机物(SOF)的催化活性进行测试. 结果表明La改性的 CeO 2 -ZrO 2 催化剂相较于CeO 2 -ZrO 2 催化剂表现出更好的活性, SOF的起燃温度为164 °C, 最大失重点温度为 212 °C; 对CeO 2 -ZrO 2 来说, SOF在168 °C开始转化, 221 °C转化最快. X射线衍射(XRD)结果表明, La的添加有效降低老化催化剂的晶粒尺寸增大速率. N 2 吸附-脱附的结果说明La的添加有利于增大CeO 2 -ZrO 2 催化剂的比表面积; O 2 -程序升温脱附(O 2 -TPD)和X射线光电子能谱(XPS)结果表明La的改性有效增加化学吸附氧含量. 因此, CeO 2 -ZrO 2 -La 2 O 3 催化剂表现出较好的催化活性和抗老化性.

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Experimental study of the active and passive regeneration procedures of a diesel particulate filter in a diesel methanol dual fuel engine

Chen

Yao

et al. 2020

Fuel

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Catalytic Oxidation of Soluble Organic Fraction in Diesel Exhausts Using Composite Oxides (CeO<sub>2</sub>)<em><sub>x</sub></em>(La-Al<sub>2</sub>O<sub>3</sub>)<sub>1-<em>x</em></sub>

Cited by 5 publications

References 20 publications

Effect of Ce Promoter on Catalytic Performance of V/SiO<sub>2</sub> in Oxidative Dehydrogenation of Ethylbenzene with Carbon Dioxide

Effect of Ce Promoter on Catalytic Performance of V/SiO<sub>2</sub> in Oxidative Dehydrogenation of Ethylbenzene with Carbon Dioxide

Influence of La on CeO<sub>2</sub>-ZrO<sub>2</sub> Catalyst for Oxidation of Soluble Organic Fraction from Diesel Exhaust

Experimental study of the active and passive regeneration procedures of a diesel particulate filter in a diesel methanol dual fuel engine

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