Catalytic Cracking of Pure Hydrocarbons

Abstract

PREVIOUSpapers of this series described the cracking of a number of paraffins, olefins, and naphthenes over a silica-zirconiaalumina catalyst under conditions similar to those employed in the commercial cracking of petroleum fractions (4, 6, ß). Results are given here from the cracking of various kinds of aromatics. As before, an effort is made to compare the catalytic with the thermal cracking of the same compounds. Thomas, Hoekstra, and Pinkston (13) studied the catalytic cracking of some alkylbenzenes, and reported results similar to ours.

Catalytic Cracking of Heavy Aromatics and Polycyclic Aromatic Hydrocarbons over Fluidized Catalytic Cracking Catalysts

“…However, the versatility of the FCC in processing different low quality, high molecular weight oil fractions opens to new chances of improving fuel quality and yield by means of new catalysts producing less aromatics. [10][11][12] On the contrary, more importance has been given to the study of the hydrogenation of polycyclic compounds, [13][14][15] preferably naphthalene. At present, the catalysts are custom made, according to the particular conditions in a refinery (feedstock, technology, production scheme).…”

The catalytic cracking of a fischer‐tropsch synthesis product

“…I1 a aussi ftf montrt que le craquage des moltcules linfaires se produit probablement sur le premier site actif ti I'intkrieur d'un pore de zfolithe; il s'en suit que les produits formes sont presque'entierement compris dans la gamme C, B Clo et sont fortement isomfrists. he past record of the studies of catalytic cracking can T be divided in two: the study of pure compound cracking (Pachenkov and Kazanskaya, 1958;Voge, 1958;Good, Voge and Greensfelder, 1949;Greensfelder and Voge, 1945;Pickert et al, 1964;Miale, Chen and Weisz, 1966;Schulz and Geertsema, 1980;Corma and Lopez Agudo, 1982;Dimitrov, 1959;Venuto et al, 1966;Corma and Wojciechowski, 1982) and the study of gas oil cracking (Greensfelder, Voge and Good, 1949;Borodzinski, Corma and Wojciechowski, 1980;Walsh and Rollman, 1977;Appleby, Gibson and Good, 1962;Blue and Engle, 1951;Nace, Voltz and Weekman, 1971;Voltz , Nace and Weekman, 1971;Borodzinski, Corma and Wojciechowski, 1980;Pachovsky and Wojciechowski, 1975;Watson and Nelson, 1933). Here we report the cracking of a synthetic feedstock which falls neatly between these two categories.…”

Measurement of critical temperatures of thermally unstable n‐Alkanes

“…For most hydrocarbon decompositions, the rate is well known to be represented empirically by a first-order unimolecular reaction (Hansford, 1953). Although the kinetics have been shown to be quite complex, (Murata et al, 1973;Tanaka et al, 1975) many decompositions are first-order in nature (Burk, 193 1 ;Greensfelder and Voge, 1945;Voge and Good, 1949). The detailed kinetic behavior of many n-paraffins has been examined by Murata et al, (1973); Murata and Saito, (1974); Tanaka et al (1975), and Arai et al (1977), who showed that the mechanism becomes complex in molecules larger than ndecane.…”