TY - JOUR ID - 388 TI - Effects of catalyst particle size on methanol dehydration at different temperatures and weight hourly space velocities JO - Journal of Particle Science and Technology JA - JPST LA - en SN - 2423-4087 AU - Khoshrooyan, Leila AU - Eliassi, Ali AU - Ranjbar, Maryam AD - Chemical Technologies Department, Iranian Research Organization for Science & Technology (IROST), Tehran, Iran Y1 - 2016 PY - 2016 VL - 2 IS - 1 SP - 41 EP - 47 KW - Methanol Dehydration KW - Fixed Bed Reactor KW - Micro-Channel Reactor KW - Catalyst Particle Size KW - DME DO - 10.22104/jpst.2016.388 N2 - The effect of catalyst particle size on dehydration of methanol to dimethyl ether is investigated using fixed bed and micro-channel reactors at different temperatures and weight hourly space velocities. The experiments were carried out at 290 and 320oC. The space velocities were changed from 10 up to 90h-1 and from 1.22 to 3.65h-1 for fixed bed and micro-channel reactors, respectively. Considering the catalyst particle size effect on dehydration reaction, the particle size was changed from 0.063 to 1mm. Commercial gamma alumina was used as catalyst in all the experiments. The fabricated micro-channel reactor had 40 channels with 1mm diameter and 6 cm length. The channels were sub-coated with alumina and finally were coated with gamma alumina as dehydration catalyst. The results showed that methanol conversions were increased by increasing the temperature and decreasing the particle size of the catalyst. Furthermore, methanol conversion in micro-channel reactor was less than for fixed bed reactor under the similar WHSVs, due to the special geometrical shape of the micro-channels. UR - https://jpst.irost.ir/article_388.html L1 - https://jpst.irost.ir/article_388_762c671666952578cb7c822d5731e988.pdf ER -