The Effects of SiO2 and Al2O3 Binders on the Activity and Selectivity of Bifunctional Fe/HZSM-5 Catalyst in Fischer-Tropsch Synthesis

Abstract

"> <span style="font-size: 10pt; color: #000000; font-style: normal; font-variant: normal;"><em>The influence of SiO</em><span style="font-size: 7pt; color: #000000; font-style: normal; font-variant: normal;"><em>2 </em><span style="font-size: 10pt; color: #000000; font-style: normal; font-variant: normal;"><em>and Al</em><span style="font-size: 7pt; color: #000000; font-style: normal; font-variant: normal;"><em>2</em><span style="font-size: 10pt; color: #000000; font-style: normal; font-variant: normal;"><em>O</em><span style="font-size: 7pt; color: #000000; font-style: normal; font-variant: normal;"><em>3 </em><span style="font-size: 10pt; color: #000000; font-style: normal; font-variant: normal;"><em>binders on the catalyst performance and products</em> <span style="font-size: 10pt; color: #000000; font-style: normal; font-variant: normal;"><em>selectivity of the precipitated Fe-Cu-K catalyst physically mixtured with HZSM-5 was</em> <span style="font-size: 10pt; color: #000000; font-style: normal; font-variant: normal;"><em>studied in a fixed bed tubular reactor. The iron catalyst was mixed with HZSM-5 zeolite</em> <span style="font-size: 10pt; color: #000000; font-style: normal; font-variant: normal;"><em>and shaped to cylinders form by alumina and or silica as a binder for increasing the</em> <span style="font-size: 10pt; color: #000000; font-style: normal; font-variant: normal;"><em>mechanical strength of bifunctional catalyst. The catalyst activity was tested under</em> <span style="font-size: 10pt; color: #000000; font-style: normal; font-variant: normal;"><em>reaction condition, P=17 bar, T=290 </em><span style="font-size: 7pt; color: #000000; font-style: normal; font-variant: normal;"><em>o</em><span style="font-size: 10pt; color: #000000; font-style: normal; font-variant: normal;"><em>C , H</em><span style="font-size: 7pt; color: #000000; font-style: normal; font-variant: normal;"><em>2</em><span style="font-size: 10pt; color: #000000; font-style: normal; font-variant: normal;"><em>/CO=1 and GHSV= 3.07 NL.h</em><span style="font-size: 7pt; color: #000000; font-style: normal; font-variant: normal;"><em>-1</em><span style="font-size: 10pt; color: #000000; font-style: normal; font-variant: normal;"><em>.g.Fe</em><span style="font-size: 7pt; color: #000000; font-style: normal; font-variant: normal;"><em>-1</em><span style="font-size: 10pt; color: #000000; font-style: normal; font-variant: normal;"><em>.</em> <span style="font-size: 10pt; color: #000000; font-style: normal; font-variant: normal;"><em>The results showed that the catalyst activity for Fischer – Tropsch and water gas shift</em> <span style="font-size: 10pt; color: #000000; font-style: normal; font-variant: normal;"><em>reactions for silica binders is lower than alumina and secondary reactions in the</em> <span style="font-size: 10pt; color: #000000; font-style: normal; font-variant: normal;"><em>presence of alumina is higher.</em></span></span></span></span></span></span></span></span><br style="font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px;" /></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span>