Zeolite framework stabilized nickel(0) nanoparticles: Active and long-lived catalyst for hydrogen generation from the hydrolysis of ammonia-borane and sodium borohydride

Date

2011-07-19

Author

Zahmakiran, Mehmet
Ayvali, Tugce
Akbayrak, Serdar
Caliskan, Salim
Celik, Derya
Özkar, Saim

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

200
views

0
downloads

Among the hydrogen storage materials, ammonia-borane and sodium borohydride appear to be promising candidates as they can release hydrogen on hydrolysis in aqueous solution under mild conditions. Here, we report the development of a cost-effective and highly active nickel(0) nanoparticles catalyst for the hydrolysis of ammonia-borane and sodium borohydride. Nickel(0) nanoparticles confined in zeolite framework were prepared by using our previously established procedure and characterized by ICP-OES, XRD, TEM, HR-TEM, SEM, EDX, XPS, Raman spectroscopy and N(2) adsorption-desorption technique. All the results show that nickel(0) nanoparticles are formed within the framework of zeolite-Y. Nickel(0) nanoparticles confined in zeolite framework are highly active catalyst in the hydrolytic dehydrogenations of sodium borohydride and ammonia-borane. This catalyst is isolable, bottleable, redispersible and reusable. The report also includes the detailed kinetic study of the catalytic hydrolysis of both substrates, ammonia-borane and sodium borohydride depending on the catalyst concentration, substrate concentration, and temperature.

Subject Keywords

General Chemistry, Catalysis

URI

https://hdl.handle.net/11511/63002

Journal

CATALYSIS TODAY

DOI

https://doi.org/10.1016/j.cattod.2010.09.022

Collections

Department of Chemistry, Article

Suggestions

OpenMETU
Core

Coke Minimization in Dry Reforming of Methane by Ni Based Mesoporous Alumina Catalysts Synthesized Following Different Routes: Effects of W and Mg ARBAĞ, HÜSEYİN; YAŞYERLİ, SENA; YAŞYERLİ, NAİL; Doğu, Timur; DOĞU, GÜLŞEN (Springer Science and Business Media LLC, 2013-12-01) Ni based mesoporous alumina (MA) catalysts were synthesized by sol-gel (SGA) and hydrothermal (MA) methods, following impregnation and one-pot synthesis routes and catalytic performances of these materials were tested in dry reforming of methane. Results proved the importance of synthesis procedure of the MA supports on the activity and coke resistance of the synthesized materials, containing 16 % Ni. Among these catalysts, MA prepared by the sol-gel technique (Ni@SGA) showed the highest activity in dry ref...
Oxidative coupling of methane over NbO (p-type) and Nb2O5 (n-type) semiconductor materials Erarslanoglu, Y; Onal, I; Doğu, Timur; Senkan, S (Springer Science and Business Media LLC, 1996-01-01) Oxidative coupling of methane to higher hydrocarbons was investigated using two types of semiconductor catalysts, NbO (p-type) and Nb2O5 (n-type) at 1 atm pressure. The ratio of methane partial pressure to oxygen partial pressure was changed from 2 to 112 and the temperature was kept at 1023 K in the experiments conducted in a cofeed mode. The results indicated a strong correlation between C-2+ selectivity performance and the electronic properties of the catalyst in terms of p- vs. n-type conductivity. The ...
Rhodium(0) nanoparticles supported on nanosilica: Highly active and long lived catalyst in hydrogen generation from the methanolysis of ammonia borane Ozhava, Derya; Özkar, Saim (Elsevier BV, 2016-02-01) Nanosilica stabilized rhodium(0) nanoparticles (Rh(0)/nanoSiO(2)), in situ formed from the reduction of rhodium(II) octanoate impregnated on the surface of nanosilica, are active catalyst in hydrogen generation from the methanolysis of ammonia borane at room temperature. Monitoring the hydrogen evolution enables us to follow the kinetics of nanoparticles formation. The resulting sigmoidal kinetic curves are analyzed by using the 2-step mechanism of the slow, continuous nucleation and autocatalytic surface g...
Oxygen Mobility in Pre-Reduced Nano- and Macro-Ceria with Co Loading: An AP-XPS, In-Situ DRIFTS and TPR Study Sohn, Hyuntae; Çelik, Gökhan; Gunduz, Seval; Dogu, Doruk; Zhang, Shiran; Shan, Junjun; Tao, Franklin Feng; Ozkan, Umit S. (Springer Science and Business Media LLC, 2017-01-01) The size effect of ceria nanoparticles on surface oxygen mobility and formation of surface oxygen vacancies in ethanol steam reforming was investigated. Higher concentration of Ce3+ surface sites of the ceria nano-particles (~4 nm, NP) was observed compared to the micro-particles (~120 nm, MP). Similarly, studies using ambient-pressure X-ray photoelectron spectroscopy (AP-XPS) exhibited higher intensity of O1s assigned to the hydroxyl group bonding to Ce3+ and significantly lower intensity for lattice oxyge...
Using spilled over hydrogen in NH3 synthesis over supported Ru catalysts Üner, Deniz (Elsevier BV, 2016-09-01) The role of spilled over hydrogen in ammonia synthesis reaction was monitored over Ru/SiO2, Ru/SBA15 and Ru/CNF using an in-situ DRIFTS cell reactor. Strongly bound hydrogen trapped on the metal and spilled over hydrogen trapped on the support due to a diffusion barrier remained on the surface after the overnight purge followed by hydrogen exposure over a reduced catalyst. When N-2 flow was introduced at room temperature, IR characteristic signals of NH3 were observed, indicating the formation of ammonia fr...

Citation Formats

M. Zahmakiran, T. Ayvali, S. Akbayrak, S. Caliskan, D. Celik, and S. Özkar, “Zeolite framework stabilized nickel(0) nanoparticles: Active and long-lived catalyst for hydrogen generation from the hydrolysis of ammonia-borane and sodium borohydride,” CATALYSIS TODAY, pp. 76–84, 2011, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/63002.