Deactivation characteristics in n-heptane reforming reaction catalyzed over small Pt, Ir and Pt-Ir bimetallic clusters in NaY

O. Bong Yang; Seong Ihl Woo; In Chul Hwang

doi:10.1007/BF00771760

Deactivation characteristics in n-heptane reforming reaction catalyzed over small Pt, Ir and Pt-Ir bimetallic clusters in NaY

O. Bong Yang
, Seong Ihl Woo^*
, In Chul Hwang

^*Corresponding author for this work

Division of Chemical Engineering

Korea Advanced Institute of Science and Technology

Research output: Contribution to journal › Journal article › peer-review

7 Scopus citations

Abstract

The deactivation characteristics of highly dispersed (about 1 nm) Pt, Ir and Pt-Ir bimetallic clusters in NaY were studied by hydrogen chemisorption, coke analysis and temperature programmed oxidation of used catalyst in n-heptane reforming reaction. As the Ir content was increased, the amount of coke decreased. Most of coke was located around the metal cluster and this coke decreased the selectivity of dehydrocyclization in n-heptane reaction. The higher activity and more improved activity maintenance of Pt-Ir/NaY bimetallic catalysts than those of Pt/NaY are related to the less amount of coke formation.

Original language	English
Pages (from-to)	239-245
Number of pages	7
Journal	Catalysis Letters
Volume	19
Issue number	2-3
DOIs	https://doi.org/10.1007/BF00771760
State	Published - 1993.06

Keywords

coke
deactivation
Ir
n-heptane reforming reaction
NaY zeolite
Pt
Pt-Ir bimetallic cluster
TPO

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10.1007/BF00771760

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title = "Deactivation characteristics in n-heptane reforming reaction catalyzed over small Pt, Ir and Pt-Ir bimetallic clusters in NaY",

abstract = "The deactivation characteristics of highly dispersed (about 1 nm) Pt, Ir and Pt-Ir bimetallic clusters in NaY were studied by hydrogen chemisorption, coke analysis and temperature programmed oxidation of used catalyst in n-heptane reforming reaction. As the Ir content was increased, the amount of coke decreased. Most of coke was located around the metal cluster and this coke decreased the selectivity of dehydrocyclization in n-heptane reaction. The higher activity and more improved activity maintenance of Pt-Ir/NaY bimetallic catalysts than those of Pt/NaY are related to the less amount of coke formation.",

keywords = "coke, deactivation, Ir, n-heptane reforming reaction, NaY zeolite, Pt, Pt-Ir bimetallic cluster, TPO",

author = "Yang, \{O. Bong\} and Woo, \{Seong Ihl\} and Hwang, \{In Chul\}",

year = "1993",

month = jun,

doi = "10.1007/BF00771760",

language = "English",

volume = "19",

pages = "239--245",

journal = "Catalysis Letters",

issn = "1011-372X",

number = "2-3",

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TY - JOUR

T1 - Deactivation characteristics in n-heptane reforming reaction catalyzed over small Pt, Ir and Pt-Ir bimetallic clusters in NaY

AU - Yang, O. Bong

AU - Woo, Seong Ihl

AU - Hwang, In Chul

PY - 1993/6

Y1 - 1993/6

N2 - The deactivation characteristics of highly dispersed (about 1 nm) Pt, Ir and Pt-Ir bimetallic clusters in NaY were studied by hydrogen chemisorption, coke analysis and temperature programmed oxidation of used catalyst in n-heptane reforming reaction. As the Ir content was increased, the amount of coke decreased. Most of coke was located around the metal cluster and this coke decreased the selectivity of dehydrocyclization in n-heptane reaction. The higher activity and more improved activity maintenance of Pt-Ir/NaY bimetallic catalysts than those of Pt/NaY are related to the less amount of coke formation.

AB - The deactivation characteristics of highly dispersed (about 1 nm) Pt, Ir and Pt-Ir bimetallic clusters in NaY were studied by hydrogen chemisorption, coke analysis and temperature programmed oxidation of used catalyst in n-heptane reforming reaction. As the Ir content was increased, the amount of coke decreased. Most of coke was located around the metal cluster and this coke decreased the selectivity of dehydrocyclization in n-heptane reaction. The higher activity and more improved activity maintenance of Pt-Ir/NaY bimetallic catalysts than those of Pt/NaY are related to the less amount of coke formation.

KW - coke

KW - deactivation

KW - Ir

KW - n-heptane reforming reaction

KW - NaY zeolite

KW - Pt

KW - Pt-Ir bimetallic cluster

KW - TPO

UR - https://www.scopus.com/pages/publications/0346212242

U2 - 10.1007/BF00771760

DO - 10.1007/BF00771760

M3 - Journal article

AN - SCOPUS:0346212242

SN - 1011-372X

VL - 19

SP - 239

EP - 245

JO - Catalysis Letters

JF - Catalysis Letters

IS - 2-3

ER -

Deactivation characteristics in n-heptane reforming reaction catalyzed over small Pt, Ir and Pt-Ir bimetallic clusters in NaY

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Keywords

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