CATALYTIC CRAKING OF A VACUUM GASOLINE ON HLaY - A ZEOLITE CATALYST ON A NONACTIVATED ALUMINUM MILLED
Ключевые слова:
catalytic cracking, zeolite, pillar montmorillonite, light gas oil, gasoline, gas, vacuum gas oil.Аннотация
A comparison of the phase, elemental composition of CaNa-montmorillonite (ММ) with the
properties of ММ in the Na-form was made, and it was found that the initial CaNaMM and NaMM, as well as the
catalysts based on them, are close to each other in elemental and phase compositions. The textural properties of
montmorillonites are determined and it is shown that the specific surface area, pore volume and number of
micropores of the initial CaNaMM is slightly higher than that of NaMM. The specific surface during aluminum
pillaring grows 2.2 times, while in the case of NaMM, the growth is 1.5 times.
Using the TPD NH3 method it was shown that the catalyst based on CaNaMM exceeds the catalyst based on
NaMM in total acidity, the number of medium and strong acid sites (Table 3). It was shown that a zeolite-containing
catalyst with a matrix of Al-pillared ММ in the CaNa-form exhibits high activity in the cracking of vacuum gas oil
(VG) with the production of 60% light gas oil. The high thermal stability of the cracking catalyst on the base of MM
in the CaNa-form and its high mechanical strength have been established.
