Rare Earth Metals Ion-exchanged β-Zeolites as Supports of Platinum Catalysts for Hydroisomerization of <i>n</i>-Heptane

刘平; 姚月; 张兴光; 王军

doi:10.1016/S1004-9541(11)60166-3

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Rare Earth Metals Ion-exchanged β-Zeolites as Supports of Platinum Catalysts for Hydroisomerization of n-Heptane

Updated：2026-01-06

- Rare Earth Metals Ion-exchanged β-Zeolites as Supports of Platinum Catalysts for Hydroisomerization of n-Heptane
- Rare Earth Metals Ion-exchanged β-Zeolites as Supports of Platinum Catalysts for Hydroisomerization of n-Heptane
- 中国化学工程学报（英文版） 2011年19卷第2期页码：278-284
- Affiliations：
  
  State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemistry and Chemical Engineering, Nanjing University of Technology,Nanjing,China,210009
- Author bio：
- Funds：
  
  Supported by the Jiangsu Provincial Key Natural Science Foundation for Universities(06KJA53012);the National Natural Science Foundation of China(20476046,20976084)
- DOI：10.1016/S1004-9541(11)60166-3
  中图分类号：
- 纸质出版：2011
- Accepted：
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刘平, 姚月, 张兴光, 等. Rare Earth Metals Ion-exchanged β-Zeolites as Supports of Platinum Catalysts for Hydroisomerization of n-Heptane[J]. 中国化学工程学报（英文版）, 2011,19(2):278-284. DOI: 10.1016/S1004-9541(11)60166-3.

-Heptane[J]. , 2011, 19(2): 278-284.
刘平, 姚月, 张兴光, 等. Rare Earth Metals Ion-exchanged β-Zeolites as Supports of Platinum Catalysts for Hydroisomerization of n-Heptane[J]. 中国化学工程学报（英文版）, 2011,19(2):278-284. DOI: 10.1016/S1004-9541(11)60166-3. DOI：

-Heptane[J]. , 2011, 19(2): 278-284. DOI： 10.1016/S1004-9541(11)60166-3.

摘要

Abstract

A series of Pt catalysts supported on the Hβ-zeolite that is ion-exchanged with the rare earth metal ions of Ce(Ⅲ) and La(Ⅲ)

are prepared by impregnation

characterized by inductively coupled plasma (ICP)

X-ray diffraction (XRD)

BET

temperature-programmed desorption of ammonia (NH3-TPD)

temperature-programmed reduction of hydrogen (H2-TPR) and H2-chemisorption techniques

and evaluated in the hydroisomerization of n-heptane with an atmospheric fixed-bed reactor.The reaction temperature

time on stream

space velocity

and the ratio of H

-heptane are changed to get the optimal conditions.The Ce(III) and La(Ⅲ)-exchanged Hβ-zeolites exhibit higher selectivity for isomerized products than the neat Hβ-zeolite.Moreover

the Ce(Ⅲ)-exchanged catalysts give higher conversions of n-heptane

whereas the La(Ⅲ)-exchanged ones do not show any improvement in con-version.Under optimal conditions

the catalyst with 0.4% (by mass) Pt and 0.5% (by mass) Ce loading presents very high selectivity of isomerized products of 95.1% coupled with high n-heptane conversion of 68.7%.Effects of the ion-exchange of Ce(Ⅲ) and La(Ⅲ) on the catalytic performance are discussed in relation with the physico-chemical properties of catalysts.

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Rare Earth Metals Ion-exchanged β-Zeolites as Supports of Platinum Catalysts for Hydroisomerization of n-Heptane

Rare Earth Metals Ion-exchanged β-Zeolites as Supports of Platinum Catalysts for Hydroisomerization of n-Heptane

DOI：10.1016/S1004-9541(11)60166-3

摘要

Abstract

关键词

Keywords

references