Micro poly(3-sulfopropyl methacrylate) hydrogel synthesis for in situ metal nanoparticle preparation and hydrogen generation from hydrolysis of NaBH4

Tugce Turhan, Yuksel Avcibasi Güvenilir, Nurettin Sahiner*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

47 Citations (Scopus)

Abstract

Polymeric hydrogels derived from SPM (3-sulfopropyl methacrylate) of micrometer size were used in the preparation of a composite-catalyst system for hydrogen generation from hydrolysis of NaBH4. In situ Co and Ni nanoparticles were prepared by chemical reduction of absorbed Co (II) and Ni (II) ions inside the hydrogel networks, and the whole composite was used as a catalyst system. The catalytic activity of the metal nanoparticles within the p(SPM) hydrogel matrix was better and faster using Co than with Ni. Additionally, other parameters that affect the hydrogen generation rate, such as temperature, metal reloading, the catalyst amounts as well as reusability, were also investigated. It was found that p(SPM)-Co micro hydrogels were even effective for hydrogen generation at 0 °C with a hydrogen generation rate of 966 (mL H2) (min)-1 (g of Co)-1. The activation energy, activation enthalpy, and activation entropy for the hydrolysis reaction of NaBH4 with micro p(SPM)-Co catalyst system were calculated as 44.3 kJ/mol, 43.26 kJ/mol K, and -150.93 J/mol K, respectively.

Original languageEnglish
Pages (from-to)511-518
Number of pages8
JournalEnergy
Volume55
DOIs
Publication statusPublished - 15 Jun 2013

Funding

This work is supported by the Scientific and Technological Research Council of Turkey . ( 110T649 ). N. Sahiner is grateful to the Turkish Academy of Science for partial support under the 2008 TUBA-GEBIP program.

FundersFunder number
Turkish Academy of Science
Türkiye Bilimsel ve Teknolojik Araştirma Kurumu110T649

    Keywords

    • Hydrogel composite reactor

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