Hydrocracking catalyst

Figure 4 shows that the relative activity for n-pentane Isomerization drops linearly with the amount of carbon deposited on the acid function of the catalyst. This is so because isomerization of n-pentane is a typical bifunctional reaction controlled by the acid function of the catalyst. Hydrocracking to propane shows... 

A high heating value product gas ( 850 Btu/scf, C02-free) can be produced directly from coal-steam reactions using a single-stage reactor in conjunction with a multiple catalyst. The conversion ( 60%) is carried out at 2 atm and 650°C. The multiple catalyst consists of potassium carbonate and a nickel methanation catalyst. The influence of each catalyst on the coal-steam reactions is combined in the integrated system. Potassium carbonate increases the total gas production and rate while the nickel catalyst hydrocracks the evolved liquids and methanates the carbon oxides. 

Maier, C.E., P.-H. Bigeard, A. Billon and P. Dufresne (1988), Boost middle distillate yield and quality with a new generation of hydrocracking catalyst . NPRA paper No. AM-88-76, Annual meeting, San Antonio, TX. 

Processing heavy oils and bitumens represents a challenge for the current refinery processes, because heavy oils and bitumens poison the metal catalysts used m the refineries. In our research at the Loker Institute, we found the use of superacid catalysts, which are less sensitive to heavy oils, an attractive solution to their processing, particularly hydrocracking. 

Dispersed Metals. Bifimctional zeoHte catalysts, principally zeoHte Y, are used in commercial processes such as hydrocracking. These are acidic zeoHtes containing dispersed metals such as platinum or palladium. The metals are introduced by cation exchange of the ammine complexes, foUowed by a reductive decomposition (21) ... 

Catalysis. As of mid-1995, zeoHte-based catalysts are employed in catalytic cracking, hydrocracking, isomerization of paraffins and substituted aromatics, disproportionation and alkylation of aromatics, dewaxing of distillate fuels and lube basestocks, and in a process for converting methanol to hydrocarbons (54). 

Antimony trichloride is used as a catalyst or as a component of catalysts to effect polymerisation of hydrocarbons and to chlorinate olefins. It is also used in hydrocracking of coal (qv) and heavy hydrocarbons (qv), as an analytic reagent for chloral, aromatic hydrocarbons, and vitamin A, and in the microscopic identification of dmgs. Liquid SbCl is used as a nonaqueous solvent. 

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