Issue 14, 2020
From the journal:

RSC Advances

Direct cyanidation of silver sulfide by heterolytic C–CN bond cleavage of acetonitrile†

Biraj Das,‡a   Pinku Saikia,‡a   Mukesh Sharma,a   Manash J. Baruah,a   Subhasish Royb  and  Kusum K. Bania ORCID logo *a  

* Corresponding authors

a Department of Chemical Sciences, Tezpur University, Assam-784028, India
E-mail: kusum@tezu.ernet.in

b Department of Chemistry, School of Applied Sciences, University of Science and Technology, Meghalaya, Techno City, Kling Road, Baridua 9th Mile, Ri-Bhoi, Meghalaya, India 793101

Abstract

Extraction of silver as silver cyanide from silver sulfide was made possible using acetonitrile as the source of cyanide. The process of cyanidation took place through the oxidation of sulfide to sulfur oxides and cleavage of the C–CN bond of acetonitrile. The reaction was found to be catalyzed by vanadium pentoxide and hydrogen peroxide. The different species involved in the cyanidation process were duly characterized using FTIR, ESI-MS, HRMS, XPS and UV-vis spectroscopic analysis. The mechanism of the cyanidation process was confirmed through in situ FTIR analysis.

Graphical abstract: Direct cyanidation of silver sulfide by heterolytic C–CN bond cleavage of acetonitrile

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Article information

DOI
https://doi.org/10.1039/D0RA00940G
Article type
Paper
Submitted
31 Jan 2020
Accepted
17 Feb 2020
First published
27 Feb 2020
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2020,10, 8314-8318

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Direct cyanidation of silver sulfide by heterolytic C–CN bond cleavage of acetonitrile

B. Das, P. Saikia, M. Sharma, M. J. Baruah, S. Roy and K. K. Bania, RSC Adv., 2020, 10, 8314 DOI: 10.1039/D0RA00940G

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