Selective low temperature carbon monoxide oxidation in H2-rich gas streams over activated carbon supported catalysts
Applied Catalysis A: General, cilt.251, sa.1, ss.75-83, 2003 (Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 251 Sayı: 1
- Basım Tarihi: 2003
- Doi Numarası: 10.1016/s0926-860x(03)00304-1
- Dergi Adı: Applied Catalysis A: General
- Derginin Tarandığı İndeksler: Scopus
- Sayfa Sayıları: ss.75-83
- Anahtar Kelimeler: Activated carbon, Pt-Ce catalysts, Pt-Sn catalysts, Selective CO oxidation
- Boğaziçi Üniversitesi Adresli: Evet
Özet
Selective oxidation of CO in a H2-rich gas stream was investigated over a series of Pt-Ce and Pt-Sn catalysts supported on activated carbon (AC). In order to study the effect of AC surface chemistry on the catalytic performance of AC supported catalysts, three types of activated carbon, namely (i) grinded and HCl washed activated carbon (AC1), (ii) air-oxidized form of AC1 (AC2), and (iii) HNO3 oxidized form of AC1 (AC3), were prepared and used as catalyst supports. The results have shown that the activities of AC supported catalysts increased with the increase in reduction temperature. Higher conversion levels were observed for 1% CeO x-1% Pt/AC and 0.25% SnOx-1% Pt/AC catalysts supported on oxidized AC supports compared to those prepared on non-oxidized support. Between these catalysts, the highest activity, ca. 80% CO conversion, is obtained on 0.25% SnOx-1% Pt/AC2. © 2003 Elsevier Science B.V. All rights reserved.