naa a22 4500 510734081 CHVBK 20180411083003.0 cr unu---uuuuu 180411e20130501xx s 000 0 eng 10.1007/s12039-013-0404-z doi (NATIONALLICENCE)springer-10.1007/s12039-013-0404-z TPR and TPD studies of effects of Cu and Ca promotion on Fe-Zn-based Fischer-Tropsch catalysts [Elektronische Daten] [OLUSOLA JAMES, BISWAJIT CHOWDHURY, SUDIP MAITY] Temperature-programmed reduction (TPR) and temperature-programmed desorption (TPD) were used to study the effects of Cu and Ca promotion on Fe-Zn-based Fischer-Tropsch catalysts. The reduction temperature for Fe2O3 → Fe3O4 was unaffected by Ca addition but decreased when promoted with Cu. Fe-Zn promoted with Cu and Ca showed even much lower reduction temperature for Fe2O3 → Fe3O4. Ca promotion enhances carburization and increases surface acidity and basicity of the Fe-Zn oxide precursor. While Cu inhibits carburization and decreases the surface acidity and basicity of the Fe-Zn oxide precursor. The implications of these effects on the application of catalysts for FT are discussed. Graphical Abstract The α-chymostrypsin hydrolysis of PNPA in AOT/isooctane/ buffer RMs has been studied with varying water content, w0, in the presence of Triton-X 100 and sulfobetaine surfactants. The activity of α-CT depends on the water pool size and the amount of AOT and mixed surfactant media. Indian Academy of Sciences, 2013 Iron-based Fischer-Tropsch catalysts nationallicence TPR nationallicence TPD nationallicence carburization nationallicence JAMES OLUSOLA Liquid Fuels Section, Central Institute of Mining and Fuels Research (CIMFR), Digwadih Campus, PO FRI 828 108, Dhanbad, India aut CHOWDHURY BISWAJIT Applied Chemistry Department, Indian School of Mines, 826 004, Dhanbad, India aut MAITY SUDIP Liquid Fuels Section, Central Institute of Mining and Fuels Research (CIMFR), Digwadih Campus, PO FRI 828 108, Dhanbad, India aut Journal of Chemical Sciences Springer-Verlag 125/3(2013-05-01), 679-686 0974-3626 125:3<679 2013 125 12039 https://doi.org/10.1007/s12039-013-0404-z text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s12039-013-0404-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- JAMES OLUSOLA Liquid Fuels Section, Central Institute of Mining and Fuels Research (CIMFR), Digwadih Campus, PO FRI 828 108, Dhanbad, India aut NATIONALLICENCE 700 1- CHOWDHURY BISWAJIT Applied Chemistry Department, Indian School of Mines, 826 004, Dhanbad, India aut NATIONALLICENCE 700 1- MAITY SUDIP Liquid Fuels Section, Central Institute of Mining and Fuels Research (CIMFR), Digwadih Campus, PO FRI 828 108, Dhanbad, India aut NATIONALLICENCE 773 0- Journal of Chemical Sciences Springer-Verlag 125/3(2013-05-01), 679-686 0974-3626 125:3<679 2013 125 12039 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer