摘要:
A catalyst is provided based on chlorinated eta alumina incorporating platinum and germanium and tin, as well as chlorine. This catalyst can be used in a process for the isomerization of a charge rich in normal C.sub.4 -C.sub.6 -paraffins, without hydrogen recycling.
摘要:
The invention is directed to steam-cracking in a fluid bed reaction zone, of a charge of hydrocarbons having at least two carbon atoms per molecule.In this process the charge (3) circulates with steam (2) and inert solid particles, heated at a temperature T.sub.1 from 500.degree. to 1,800.degree. C., through at least one enclosure (7). A gas effluent is separated from the particles in the enclosure and fed to a quenching zone (8) opening into said enclosure. Said effluent is circulated with cooling second solid particles which are at a temperature T.sub.2 lower than T.sub.1 and at most equal to 800.degree. C. A steam-cracking effluent is then recovered through line (15).This process can be used in petrochemistry, particularly for producing ethylene and propylene.
摘要:
Preparation of oligomers of C.sub.2 to C.sub.8 olefins useful in gasoline, yet fuel and diesel fuel is disclosed. The oligomerization is catalyzed by a modified mordenite in the H or NH.sub.4 + to form which has been sequentially treated with steam and an acid.