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Title of Journal: Top Catal

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Abbravation: Topics in Catalysis

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Springer US

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DOI

10.1016/0016-0032(54)90646-8

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1572-9028

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Higher Alcohol Synthesis Using KDoped CoRhMoSSub

Authors: Philip E Boahene Venkateswara R Surisetty Ramaswami Sammynaiken Ajay K Dalai
Publish Date: 2013/12/03
Volume: 57, Issue: 6-9, Pages: 538-549
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Abstract

In this study alkalinized MWCNT supported MoS2 catalysts have been doublypromoted with Co and Rh Catalysts were prepared by the conventional coimpregnation method and stabilized under argon atmosphere Characterization of the oxidic samples by BET revealed that the mesoporosity of the pristine MWCNT support was not compromised after loading a combined total of 30 wt metals 9 wt K 45 wt Co 15 wt Rh and 15 wt Mo on the support however a significant decrease in specific surface area was observed Broad angle XRD analysis confirmed the homogenous dispersion of catalyst metals on the support Two catalyst grain sizes were first investigated to elucidate the effect of particle size a finely ground powder 88 μm and a pelletized form 1780 μm Despite the total alcohol yield of 0261 g/gcat h observed by conducting higher alcohol synthesis reaction at T = 330 °C P = 83 MPa H2/CO = 125 and GHSV = 36 m STP 3 /kgcat h for the fine powdered sample the relatively higher pressure drop could be minimized by using the pelletized form of the catalyst Finally a systematic study of variety of selected binders was conducted to gain insight of catalyst’s applicability for industrial purposes Three selected binders namely bentonite clay coal tar and humic acid were thus investigated taking into consideration significant factors such as melting point and binder requirement per catalyst support The CO conversions evaluated for the two binderfree catalysts 88 and 1700 μm showed that the catalyst with fine particle sizes 88 μm performed better than that in the pelletized form binderfree 1700 μm yielding a maximum ethanol selectivity of 385  at steadystate reaction conditions

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