Catalytic Cracking of Pure Hydrocarbons.

Sustainable Separations of C4‐Hydrocarbons by Using Microporous Materials

“…[2] Large amounts of C 4 hydrocarbons are coproduced with ethylene in steam cracking, as well as alongside gasoline in the fluid catalytic cracking (FCC) process. [3] Moreover,t here is increasingi nteresti nv alorizing the C 4 hydrocarbons that arise from coal liquefaction and biomass refining. This is especially important in China,w here coal is the main carbon resource.…”

“…[11] The isomers of 2-butenea re not furtherseparated because they react analogously in further processing by dehydrogenation, oligomerization, or alkylation. [3] Ap ossible separation could,h owever,l ead to new applications, including the productiono fh igh-performance polymers. [4] Hence, developing Petrochemical refineries must separate hydrocarbon mixtures on al arge scale for the production of fuels and chemicals.T ypically,t hese hydrocarbons are separated by distillation, which is extremelye nergy intensive.…”

Using kinetics to study intermediates in acid catalyzed reactions on solids

“…Early workers largely ignored the details of the chemistry involved in the formation of the transition state and concentrated instead on determining product distributions and rdating those to simple postulates regarding the probability of finding the ionic charge on any given carbon in the molecuie [31]. By this means, the fact that.…”

“…Early workers reported the presence of hydrogen in the products, but their data were obtained at significant levels of conversion over catalysts of low activity [31][32] and are no doubt contaminated by both thermal cracking and by secondary catalytic reactions. Even some recent work claims cSi/A1 = 50 that hydrogen is an initial product in the cracking of 3MP and nH [24,27], although evidence for this is weak and conflicts with work on the cracking of nO7 [33], rigs [63], nOlz [631, nO16 I63] and mixed linear and monomethyl paratfms from 05 to Ca0 [34,35] where hydrogen was not found as an initial product using the extrapolation techniques described above.…”

Decomposition Measurements of RP-1, RP-2, JP-7, n-Dodecane, and Tetrahydroquinoline in Shock Tubes

“…Voge published a "first-order thermal velocity constant" for the thermal cracking of n-dodecane as it passed through a continuous flow reactor at 773 K and atmospheric pressure [7]. In a following publication, Voge and Good reported similar measurements for n-hexadecane, listed the currently existing thermal cracking rates for n-alkanes H from C 4 to C 16 , and proposed an empirical correlation between decomposition rate and carbon number [8].…”