Loss of the isobutylene which is recycled must be minimized. In the present invention, the dehydrogenation process is operated so as to limit the isomerization of isobutane or isobutylene to their corresponding straight-chain (i.e., normal) form.f the feed stream is substantially pure isobutane (i.e., it contains no isobutylene) it has been determined that, when using a Pt-Nd on zinc aluminate catalyst, a selectivity of 95% or more to isobutylene can be obtained with a residence time of about 5 seconds at a temperature of about 510Â° C. or lower.
My current notary public commission will expire soon and I have already reapplied to become a notary public. If all application requirements are met, your new notary public commission will be issued 30 days prior to the expiration date of your current notary public commission.
You need to renew Network+ every three years. Go to your certification account at CompTIAâs website. Login and check it out. This place stands as the central hub for submitting CEs, paying fees, and other details for keeping your Network+ certification active.