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New Catalyst for Removal of N2O from Nitric Acid Plant Tail Gases
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SYSNO ASEP 0428862 Document Type C - Proceedings Paper (int. conf.) R&D Document Type The record was not marked in the RIV Title New Catalyst for Removal of N2O from Nitric Acid Plant Tail Gases Author(s) Obalová, L. (CZ)
Kovanda, F. (CZ)
Jirátová, Květa (UCHP-M) RID, ORCID, SAISource Title Proceedings. - Bratislava : AXIMA Graphics Design & Printing Services, 2014 / Markoš J. - ISBN 978-80-89475-13-1 Pages s. 3 Number of pages 1 s. Publication form Print - P Action International Conference of Slovak Society of Chemical Engineering /41./ Event date 26.05.2014-30.05.2014 VEvent location Tatranské Matliare Country SK - Slovakia Event type EUR Language eng - English Country SK - Slovakia Keywords nitrous oxide ; catalytic decomposion ; mixed oxide catalyst Subject RIV CI - Industrial Chemistry, Chemical Engineering R&D Projects TA01020336 GA TA ČR - Technology Agency of the Czech Republic (TA ČR) Institutional support UCHP-M - RVO:67985858 Annotation The catalytic decomposition of N2O as a method for abatement of N2O emissions in waste gases attracts increasing attention due to the inclusion of N2O in the greenhouse gas trade. Many research groups are focused on the development of suitable catalysts for this reaction because it is still a problem to find the catalyst with sufficient activity and stability in real off-gas conditions due to water, oxygen and NOx inhibition effects. Multicomponent mixed oxides prepared by thermal treatment of layered double hydroxide (LDH) precursors seem to be promising catalysts for this reaction. Layered double hydroxides with general chemical composition of [MII1-xMIIIx(OH)2]x+[An-x/n.yH2O]x- where MII and MIII are divalent and trivalent metal cations and An- is an n-valent anion (often carbonate) consist of positively charged hydroxide layers separated by interlayers containing anions and water molecules. Thermal treatment of LDH precursors gives finely dispersed mixed oxides of MII and MIII with large surface area and good thermal stability. Presented contribution will present intrinsic kinetic data obtained in laboratory experiments of N2O decomposition over grained LDH-related mixed oxides as well as results of pilot plant experiments in real off gas from nitric acid production. Workplace Institute of Chemical Process Fundamentals Contact Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227 Year of Publishing 2015
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