Low-Temperature Pyrolysis–Catalysis Coupled System for Efficient Tetrachlorobenzene Removal: Condition Optimization and Decomposition Mechanism

Autor:	Ning Xu, Pingping Liu, Chi He, Yanke Yu, Xiaosheng Yuan, Huarui Ren, Jinglian Zhao
Rok vydání:	2018
Předmět:	Materials science General Chemical Engineering Catalyst support Energy Engineering and Power Technology Vanadium chemistry.chemical_element Decomposition Catalysis law.invention Fuel Technology Chemical engineering chemistry law Fly ash Calcination Pyrolysis Space velocity
Zdroj:	Energy & Fuels. 32:5509-5517
ISSN:	1520-5029 0887-0624
DOI:	10.1021/acs.energyfuels.8b00095
Popis:	The decomposition of tetrachlorobenzene (TeCB) emitted from simulated fly ash was studied in a low-temperature pyrolysis–catalysis coupled system. The influences of catalyst support, active component type, active phase-to-assistant ratio, vanadium loading, and catalyst calcination temperature on TeCB conversion were comprehensively investigated. The optimal catalyst composition and preparation conditions were determined through single-factor experiments. Moreover, the effects of reaction temperature, space velocity, and pollutant initial concentration on TeCB decomposition efficiency were explored by orthogonal experiments. The possible mechanism for PeCB decomposition over prepared V2O5–WO3/TiO2 catalysts was proposed based on reaction-byproduct composition and distribution. It is found that the TeCB decomposition efficiency is positively correlated with reaction temperature while being negatively correlated with gas hourly space velocity (GHSV) and TeCB initial concentration. GHSV has the most significa...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::a85798dacaca14c3f02ba202fe583850 https://doi.org/10.1021/acs.energyfuels.8b00095 Zobrazit plný text záznamu