Preparation of Pt/C catalyst using alcohol reduction and a polyol process in the presence of urea for oxygen reduction reaction

Authors: Oh, Hyung-Suk¹; Oh, Jong-Gil¹; Hong, Youn-Gi¹; Sharma, Raj Kishore¹; Shul, Yong-Gun¹; Kim, Hansung¹

Source: Research on Chemical Intermediates, Volume 34, Numbers 8-9, 2008 , pp. 853-861(9)

Publisher: VSP, an imprint of Brill

Key:

- Free Content

- New Content

- Subscribed Content

- Free Trial Content

Abstract:

The effect of urea hydrolysis was studied on the preparation and properties of Pt/C catalyst. The hydrolysis of urea provided hydroxyl ions in a controlled manner that prevented the localized pH change in the solution and only surface precipitation is resulted in a particle growth. From rotating ring disk electrode (RRDE) experiments, the Pt/C prepared in the presence of urea showed better exchange current density toward the oxygen reduction reaction. The rate of H₂O₂ formation was reduced when urea was used in the alcohol reduction process and it was further decreased in the Pt/C catalyst prepared by the polyol process combined with urea.

Keywords: PT/C; ELECTRO CATALYST; POLYOL PROCESS; UREA HYDROLYSIS

Document Type: Research article

DOI: 10.1163/156856708786189294

Affiliations: 1: Department of Chemical Engineering, Yonsei University, 134 Shinchon-Dong, Seodaemun-gu, Seoul 120-749, South Korea

The full text electronic article is available for purchase. You will be able to download the full text electronic article after payment.

$25.00 plus tax