Situmeang, Rudy T.M (2007) NiO/LaCrO3 PREPARED BY CITRIC ACID – FREEZE DRYING METHOD FOR NO2 CONVERSION. Jurnal Sains MIPA, 13 (2). pp. 144-148. ISSN 1978-1873


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NiO/LaCrO3 catalyst was prepared using citric acid freeze drying method from its precursor of nitrates. The preparation steps consist of wet impregnation of 6% (b/b) NiO to LaCrO3, evaporation by freeze drying and calcination. The calcinated solid was then grinded into fine powder before application. To examine its activity, the catalyst was used in NO2 conversion experiment at different temperatures. The experimental results indicated the dependency of NO2 conversion on temperature, with the highest conversion (90 % or 1,98 ppm) was achieved at 400 C. X-ray diffraction examination proved that its crystalline phases consist of NiO cubic structure in a bulk crystalline of LaCrO3 perovskite structure. Furthermore, FTIR analysis appeared to indicate that both the Lewis and Brønsted-Lowry acid sites were involved in the catalytic conversion of NO2 and gravimetric analysis showed that.

Item Type: Article
Subjects: Q Science > QD Chemistry
Divisions: Fakultas Matematika dan Ilmu Pengetahuan Alam (FMIPA) > Prodi Kimia
Depositing User: Dr. Rudy Tahan Mangapul Situmeang
Date Deposited: 06 Nov 2018 03:07
Last Modified: 06 Nov 2018 03:07

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