Situmeang, Rudy T.M and Septiano, Mitra and Sulisthio, Tri Septian (2011) NiFe2O4 Catalyst : The Influence of Gas Feed Composition on CO2/H2 Conversion into Alcohol Compounds. In: 14th Asian Chemical Congress 2011, 5 - 8 September 2011, Bangkok.

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Abstract

NixFe1-xO4 catalyst (where X = 0, 2) was prepared by using citric acid method from its precursor of nitrates. The catalyst furthermore is characterized by using X-ray diffiactometer, IR spectrophotometer, and EDX-SE microscopy. To examine its activity, the catalyst was used in CO2/H2 conversion at different temperatures (200 - 400 C) by varying the ratio of CO2/H2(3/l ; 4/l ; and 5/1) in gases feed. The experiment results indicated the dependency of CO2/H2 conversion on both temperature and feed ratio of CO2/H2, with the highest alcohol formation (almost 800 ppm) was achieved at 300 C under the ratio of CO2/H2(4/1,50 mL/ min;. Moreover, a more distributed product of alcohol compounds (such as methanol, ethanol and buthanol ) are happened, included propanol in the C02/H2 ratio of 5/1. X-ray diffraction examination confirmed that the catalyst has a spinel structure as a major phase in Fe0.8Ni0.2O3+8 crystalline. FTIR analysis indicated that both the Lewis acid sites which are located in wave numbers of 1490 and 1450 cm-1 and Bronsted - Lowry acid sites which are located in wave numbers of 1645 and 1622 cm-1 were involved in the catalytic conversion. Futthermore, Rietveld analysis proved that catalyst consists of NiFe2O4, NiO, Fe2O3, and Fe2O3 crystalline phases.

Item Type: Conference or Workshop Item (Paper)
Subjects: Q Science > QD Chemistry
Divisions: Fakultas Keguruan dan Ilmu Pendidikan (FKIP) > Prodi Pendidikan Kimia
Depositing User: Dr. Rudy Tahan Mangapul Situmeang
Date Deposited: 28 Feb 2018 08:25
Last Modified: 28 Feb 2018 08:25
URI: http://repository.lppm.unila.ac.id/id/eprint/6446

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