摘要:
A process is disclosed for the conversion of a hydrocarbon stream which is primarily C.sub.4 paraffins to aromatic hydrocarbons and hydrogen over certain crystalline silicates containing zinc.
摘要:
A process for the production of methane and ethane from a C.sub.2 -C.sub.4 paraffins hydrocarbon feed stream of higher average carbon number than the product which comprises contacting said feed with certain crystalline silicates at an elevated temperature and a pressure above 10 bar.
摘要:
A process is disclosed for the preparation of an aromatic hydrocarbon mixture and hydrogen from a light hydrocarbon stream containing at least 50% w propane using as catalyst certain crystalline silicates promoted with zinc.
摘要:
The invention relates to a process for removing poly(propylene oxide) from propylene oxide by membrane separation, wherein a membrane having an average pore size of from 0 to 5 nm is used. In said process, a liquid feed comprising propylene oxide and poly(propylene oxide) may be separated by the membrane into a permeate comprising propylene oxide and either no poly(propylene oxide) or poly(propylene oxide) at a concentration which is lower than the poly(propylene oxide) concentration in the feed, and a retentate comprising propylene oxide and poly(propylene oxide) at a concentration which is higher than the poly(propylene oxide) concentration in the feed.
摘要:
The invention relates to a process for removing poly(propylene oxide) from propylene oxide by membrane separation, wherein a membrane having an average pore size of from 0 to 5 nm is used. In said process, a liquid feed comprising propylene oxide and poly(propylene oxide) may be separated by the membrane into a permeate comprising propylene oxide and either no poly(propylene oxide) or poly(propylene oxide) at a concentration which is lower than the poly(propylene oxide) concentration in the feed, and a retentate comprising propylene oxide and poly(propylene oxide) at a concentration which is higher than the poly(propylene oxide) concentration in the feed.