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Date: 7-8-2017
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Date: 9-5-2016
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Date: 9-5-2016
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Isomerization of n-Butenes
n-Butene could be isomerized to isobutene using Shell FER catalyst which is active and selective. n-Butene mixture from steam cracker or FCC after removal of C5 olefins via selective hydrogenation step passes to the isomerization unit. It has been proposed that after the formation of a butyl carbocation, a cyclopropyl carbocation is formed which gives a primary carbenium ion that produces isobutene :
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دخلت غرفة فنسيت ماذا تريد من داخلها.. خبير يفسر الحالة
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ثورة طبية.. ابتكار أصغر جهاز لتنظيم ضربات القلب في العالم
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العتبة العباسية المقدسة تستعد لإطلاق الحفل المركزي لتخرج طلبة الجامعات العراقية
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