Effects of Alkali metals on Nickel/Alumina catalyzed ethanol dry reforming

Se Won Park; Dongseok Lee; Seung Ik Kim; Young Jin Kim; Ji Hoon Park; Iljeong Heo; Tae Sun Chang; Jin Hee Lee

doi:10.3390/catal11020260

Effects of Alkali metals on Nickel/Alumina catalyzed ethanol dry reforming

Se Won Park, Dongseok Lee, Seung Ik Kim, Young Jin Kim, Ji Hoon Park, Iljeong Heo, Tae Sun Chang, Jin Hee Lee

Department of Environmental Engineering

Korea Research Institute of Chemical Technology

Research output: Contribution to journal › Article › peer-review

8 Scopus citations

Abstract

Although ethanol dry reforming is an attractive carbon utilization technology, problems of severe coke formation and low catalytic activity should be solved for realization of the technology. We demonstrate the effects of alkali metal additives (lithium, sodium, and potassium) on nickel catalyzed ethanol dry reforming. Potassium doped nickel catalyst (Ni/K2O-Al2O3) showed enhanced catalytic activity and durability in ethanol dry reforming. Thermogravimetric analysis (TGA) showed that Ni/K2O-Al2O3 had a high resistance to coke formation. The amounts of coke formed on Ni/K2O-Al2O3 were 1/3 lower than the amounts of coke formed on Ni/Al2O3. The total coke quantities were closely correlated to the number of basic sites of the nickel catalysts. Raman spectroscopy and transmission electron microscopy analyses revealed that the alkali metals control the coke formation on the catalysts.

Original language	English
Article number	260
Pages (from-to)	1-14
Number of pages	14
Journal	Catalysts
Volume	11
Issue number	2
DOIs	https://doi.org/10.3390/catal11020260
State	Published - Feb 2021

Keywords

Alkali metal
Carbon capture and utilization
Ethanol dry reforming
Nickel catalyst

Access to Document

10.3390/catal11020260

Cite this

@article{ac1d6841f5af4565b495e65e0dca2042,

title = "Effects of Alkali metals on Nickel/Alumina catalyzed ethanol dry reforming",

abstract = "Although ethanol dry reforming is an attractive carbon utilization technology, problems of severe coke formation and low catalytic activity should be solved for realization of the technology. We demonstrate the effects of alkali metal additives (lithium, sodium, and potassium) on nickel catalyzed ethanol dry reforming. Potassium doped nickel catalyst (Ni/K2O-Al2O3) showed enhanced catalytic activity and durability in ethanol dry reforming. Thermogravimetric analysis (TGA) showed that Ni/K2O-Al2O3 had a high resistance to coke formation. The amounts of coke formed on Ni/K2O-Al2O3 were 1/3 lower than the amounts of coke formed on Ni/Al2O3. The total coke quantities were closely correlated to the number of basic sites of the nickel catalysts. Raman spectroscopy and transmission electron microscopy analyses revealed that the alkali metals control the coke formation on the catalysts.",

keywords = "Alkali metal, Carbon capture and utilization, Ethanol dry reforming, Nickel catalyst",

author = "Park, {Se Won} and Dongseok Lee and Kim, {Seung Ik} and Kim, {Young Jin} and Park, {Ji Hoon} and Iljeong Heo and Chang, {Tae Sun} and Lee, {Jin Hee}",

note = "Publisher Copyright: {\textcopyright} 2021 by the authors. Licensee MDPI, Basel, Switzerland.",

year = "2021",

month = feb,

doi = "10.3390/catal11020260",

language = "English",

volume = "11",

pages = "1--14",

journal = "Catalysts",

issn = "2073-4344",

publisher = "Multidisciplinary Digital Publishing Institute (MDPI)",

number = "2",

}

TY - JOUR

T1 - Effects of Alkali metals on Nickel/Alumina catalyzed ethanol dry reforming

AU - Park, Se Won

AU - Lee, Dongseok

AU - Kim, Seung Ik

AU - Kim, Young Jin

AU - Park, Ji Hoon

AU - Heo, Iljeong

AU - Chang, Tae Sun

AU - Lee, Jin Hee

PY - 2021/2

Y1 - 2021/2

N2 - Although ethanol dry reforming is an attractive carbon utilization technology, problems of severe coke formation and low catalytic activity should be solved for realization of the technology. We demonstrate the effects of alkali metal additives (lithium, sodium, and potassium) on nickel catalyzed ethanol dry reforming. Potassium doped nickel catalyst (Ni/K2O-Al2O3) showed enhanced catalytic activity and durability in ethanol dry reforming. Thermogravimetric analysis (TGA) showed that Ni/K2O-Al2O3 had a high resistance to coke formation. The amounts of coke formed on Ni/K2O-Al2O3 were 1/3 lower than the amounts of coke formed on Ni/Al2O3. The total coke quantities were closely correlated to the number of basic sites of the nickel catalysts. Raman spectroscopy and transmission electron microscopy analyses revealed that the alkali metals control the coke formation on the catalysts.

AB - Although ethanol dry reforming is an attractive carbon utilization technology, problems of severe coke formation and low catalytic activity should be solved for realization of the technology. We demonstrate the effects of alkali metal additives (lithium, sodium, and potassium) on nickel catalyzed ethanol dry reforming. Potassium doped nickel catalyst (Ni/K2O-Al2O3) showed enhanced catalytic activity and durability in ethanol dry reforming. Thermogravimetric analysis (TGA) showed that Ni/K2O-Al2O3 had a high resistance to coke formation. The amounts of coke formed on Ni/K2O-Al2O3 were 1/3 lower than the amounts of coke formed on Ni/Al2O3. The total coke quantities were closely correlated to the number of basic sites of the nickel catalysts. Raman spectroscopy and transmission electron microscopy analyses revealed that the alkali metals control the coke formation on the catalysts.

KW - Alkali metal

KW - Carbon capture and utilization

KW - Ethanol dry reforming

KW - Nickel catalyst

UR - http://www.scopus.com/inward/record.url?scp=85100735746&partnerID=8YFLogxK

U2 - 10.3390/catal11020260

DO - 10.3390/catal11020260

M3 - Article

AN - SCOPUS:85100735746

SN - 2073-4344

VL - 11

SP - 1

EP - 14

JO - Catalysts

JF - Catalysts

IS - 2

M1 - 260

ER -

Effects of Alkali metals on Nickel/Alumina catalyzed ethanol dry reforming

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this