Next Article in Journal
Ni Catalysts Supported on Modified Alumina for Diesel Steam Reforming
Next Article in Special Issue
Solvent-Free Selective Oxidation of Toluene with O2 Catalyzed by Metal Cation Modified LDHs and Mixed Oxides
Previous Article in Journal
Characterization and Catalytic Activity of Mn-Co/TiO2 Catalysts for NO Oxidation to NO2 at Low Temperature
Previous Article in Special Issue
Selective Oxidation of Glycerol with 3% H2O2 Catalyzed by LDH-Hosted Cr(III) Complex
Article Menu

Export Article

Open AccessArticle
Catalysts 2016, 6(1), 10; doi:10.3390/catal6010010

Catalytic Performance of Lanthanum Vanadate Catalysts in Ammoxidation of 2-Methylpyrazine

1
Leibniz-Institut für Katalyse e.V. an der Universität Rostock, Albert-Einstein-Straße 29a, 18059 Rostock, Germany
2
SABIC Research and Technology Pvt. Ltd., Plot No. 81 to 85, Chikkadunnasandra, Sarjapura, Bangalore-562125, India
*
Authors to whom correspondence should be addressed.
Academic Editor: Stuart H. Taylor
Received: 25 November 2015 / Revised: 6 January 2016 / Accepted: 7 January 2016 / Published: 12 January 2016
(This article belongs to the Special Issue Catalysts for Selective Oxidation)
View Full-Text   |   Download PDF [1311 KB, uploaded 12 January 2016]   |  

Abstract

The influence of reaction conditions on the catalytic performance of lanthanum vanadate (La0.1V0.9Ox) catalyst in the ammoxidation of 2-methylpyrazine (MP) to 2-cyanopyarazine (CP) has been investigated. This novel catalytic material exhibited remarkably good performance with very high space-time-yields (STY) of CP. The reaction parameters such as the effect of temperature, gas hourly space velocity (GHSV) and all other reaction variables (e.g., NH3, air, and MP feed rates) on the catalytic performance were explored and optimized. For example, an increase in MP feed rate from 2 to >16 mmol/h led to decreased conversion of MP but increased the STY of CP significantly. Optimal performance was achieved when the reaction temperature was 420 °C and the molar ratio of 2-MP, ammonia, air, H2O and N2 in the feed gas was set to 1:7:26:13:22. Under these optimal reaction conditions, the catalyst showed a MP conversion of ~100%, CP selectivity of 86%, and STY of >500 gCP/(kgcat∙h). On the other hand, the formation of pyrazine (Py) as a by-product was found to be high when the NH3:MP ratio was lower at increased contact time. This suggests possible differences in the reaction mechanism pathways with respect to feed composition over La0.1V0.9Ox catalysts. View Full-Text
Keywords: 2-methylpyrazine; 2-cyanopyrazine; ammoxidation; lanthanum vanadate; reaction parameters 2-methylpyrazine; 2-cyanopyrazine; ammoxidation; lanthanum vanadate; reaction parameters
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Kalevaru, V.N.; Dhachapally, N.; Martin, A. Catalytic Performance of Lanthanum Vanadate Catalysts in Ammoxidation of 2-Methylpyrazine. Catalysts 2016, 6, 10.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Catalysts EISSN 2073-4344 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top