BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Talks.cam//talks.cam.ac.uk//
X-WR-CALNAME:Talks.cam
BEGIN:VEVENT
SUMMARY:Development of Novel Carbon Nanotubes Supported Catalysts for Fisc
 her–Tropsch and Higher Alcohol Syntheses - Professor Ajay K. Dalai\, Cat
 alysis &amp\; Chemical Reaction Engineering Laboratories\, Department of C
 hemical and Biological Engineering\, University of Saskatchewan\, Saskatoo
 n\, SK\, S7N 5A9\, Canada
DTSTART:20161115T160000Z
DTEND:20161115T170000Z
UID:TALK68756@talks.cam.ac.uk
CONTACT:Alexei Lapkin
DESCRIPTION:Fischer-Tropsch (FT) and higher alcohol synthesis (HAS) proces
 ses are important for the conversion of synthesis gas (syngas) to liquid f
 uels. These fuels are free from sulfur and nitrogen compounds and are thus
  quite clean with high octane and cetane numbers. In this presentation\, t
 he feasibility of using new nanocatalyst formulations for FT and HAS are d
 iscussed with a focus on the conversion of syngas to green diesel and alco
 hols. For FT synthesis\, the effectiveness of both unpromoted and promoted
  Fe and Co on carbon nanotubes (CNTs) is examined. The effects of pore dia
 meter and structure of iron and iron catalysts supported on CNTs on FT rea
 ction rates and product selectivity are presented. Two types of CNTs with 
 different average pore sizes (12 and 63 nm)\, however with comparable surf
 ace area\, were examined. The CNTs were prepared by chemical vapor deposit
 ion method\, where as the metals were loaded with incipient impregnation m
 ethod and the catalysts were characterized by ICP\, BET\, XRD\, TPR\, SEM 
 and TEM analyses. According to TEM images of iron catalysts supported on n
 arrow pore CNTs (np-CNT) and wide pore CNTs (wp-CNT)\, a majority (~80%) o
 f the iron oxide particles were deposited inside the nanotubes’ pores. T
 hese particles on the Fe/wp-CNT (17 nm) were larger than those on Fe/np-CN
 T sample (11 nm). Also\, the degree of reduction and metal dispersion of t
 he Fe/np-CNT catalyst was much higher compared to the other catalyst leadi
 ng to better FTS in terms of CO conversion and C5+ selectivity of the np-C
 NT catalyst. In addition\, novel cobalt catalyst supported on CNTs promote
 d with Co\, Ru and K with low deactivation was created\, extensively chara
 cterized and studied for FT reactions. The data show that the catalyst is 
 quite promising with high catalyst activity and C5+ selectivity. A series 
 of alkali and metal (Rh and Co) promoted MoS2 catalysts supported on CNTs 
 were prepared and extensively tested for HAS reactions in a fixed-bed syst
 em. Our research has shown that the total alcohol space time yield (STY) u
 sing trimetallic catalyst is 0.281 g/g of cat.h at optimum reaction condit
 ions. The catalysts were pelletized and confirmed for their activities and
  product selectivities for Gas-to-Liquid Technologies (GTL).   
LOCATION:LT2\, Department of Chemical Engineering and Biotechnology\, Phil
 ippa Fawcett Drive
END:VEVENT
END:VCALENDAR