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HCA材料的制備與應(yīng)用
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昆明理工大學(xué)化學(xué)工程學(xué)院,昆明理工大學(xué)化學(xué)工程學(xué)院,昆明貴研催化劑有限公司,昆明貴研催化劑有限公司

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國家重點新產(chǎn)品 ( 2011EG115008)


Preparation and Application of the HCA Catalyst Materials
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Faculty of Chemical Engineering,Kunming University of science and technology,Faculty of Chemical Engineering,Kunming University of science and technology,Kunming Sino-Platinum Metals Catalyst CoLtd,Kunming Sino-Platinum Metals Catalyst CoLtd

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    摘要:

    為滿足越來越嚴(yán)格的汽車尾氣排放標(biāo)準(zhǔn)且有效降低冷啟動時THC排放以及解決神龍、奇瑞車型在冷啟動時鈀基催化劑的碳?xì)湮叫阅芟У娜秉c,本文重點探究了所制備的HCA催化劑在發(fā)動機臺架上的催化性能、HC吸附性能以及其在整車上的應(yīng)用。在本研究中,采用沸石和貴金屬連接體的Pd /Ce-HZSM-5為HCA材料的主要組分,對神龍和奇瑞車型而言,其排放結(jié)果表明：冷啟動時,Pd/ Ce-HZSM-5型HCA催化劑對HC捕集效果明顯優(yōu)于傳統(tǒng)方式制備的催化劑,由于鈀基催化劑具有良好的起燃特性,碳?xì)湮降倪B接體及低起燃性使得Pd/Ce-HZSM-5催化劑的碳?xì)渑欧胚M(jìn)一步減少。冷啟動20-30s時,沸石負(fù)載鈀基催化劑的碳?xì)湮搅孔畲?。HCA材料對于滿足高標(biāo)準(zhǔn)的低溫HC排放質(zhì)量方面具有很大的研究潛力。

    Abstract:

    To meet the Chinese GB regulations (Equivalent to Euro V) and to adsorb the excess hydrocarbons emitted during a period of engine cold-start, in addition, Hydrocarbon (HC) adsorption behavior on Pd-based catalyst appeared during a cold-start period of actual driving cycle in the vehicles of, Dragon and Cherry, therefore, we leaded in HCA (Hydrocarbon Absorber) material. Catalytic performance of prepared HCA catalyst and HC adsorption process were tested, and then their applications were studied in the whole vehicle. In this work, Pd /Ce-HZSM-5 was used as the main recipes of HCA materials as well as a combination of zeolite and precious metals. For Dragon and Cherry models, their emission results show Pd/Ce-HZSM-5 catalyst is superior to conventional catalyst for HC trap. Since Pd-based catalyst showed relatively good light-off performance, the combination of HC adsorption and early light-off activity has led to an improvement of overall HC emission reduction to Pd/Ce-HZSM-5. Use of zeolite combined with Pd-based catalyst caused maximize HC adsorption between 20-30 s during the cold-start period at fresh. HCA material has great research potential to meet high standards of HC emissions quality at low temperature.

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陽超琴,王亞明,吳樂剛,李文松. HCA材料的制備與應(yīng)用[J].稀有金屬材料與工程,2017,46(9):2423~2427.[YANG Chaoqin, WANG Yaming, WU Legang, LI Wensong. Preparation and Application of the HCA Catalyst Materials[J]. Rare Metal Materials and Engineering,2017,46(9):2423~2427.]
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  • 收稿日期:2015-12-30
  • 最后修改日期:2017-09-09
  • 錄用日期:2016-12-06
  • 在線發(fā)布日期: 2017-11-29
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