Open AccessSulfur dioxide removal by sol-gel sorbent derived CuO/Alumina sorbents in fixed bed adsorber
Author(s) -
Zhongmin Wang
Publication year - 2017
Publication title -
aims environmental science
Language(s) - English
Resource type - Journals
eISSN - 2372-0352
pISSN - 2372-0344
DOI - 10.3934/environsci.2017.1.134
Subject(s) - sorbent , sol gel , sorption , materials science , copper oxide , silica gel , chemical engineering , flue gas , sulfur dioxide , coating , oxide , copper , adsorption , composite material , metallurgy , chemistry , inorganic chemistry , nanotechnology , organic chemistry , engineering
Nanostructured alumina supported copper oxide granular sorbents were prepared by the sol-gel method. The properties of the sol-gel derived sorbents were compared with a similar commercial sorbent which has been used in the pilot scale moving-bed copper oxide process for flue gas treatment. The crushing strength of the sol-gel derived sorbents is about 6–7 times that of the commercial samples, while the attrition rate of the former is at least 3 times smaller. At temperatures below 400 °C, SO2 sorption capacity of the sol-gel derived sorbent is about 3 times that of the commercial sorbent with a similar amount of CuO loading (7–9 wt%). The better mechanical properties and higher sulfation capacity of the sol-gel derived alumina supported copper oxide sorbents are due to their unique microstructure and the coating method for CuO