The modified H-ultrasil zeolite maintained high crystallinity and high specific surface areas precursors testified by XRD, BET and NH 3-TPD analysis. Effect of lanthanum concentration on the adsorptive, acidic and catalytic properties of H-ultrasil in the ethylbenzene ethylation reaction was investigated. Influence of modifying on catalytic properties of H-ultrasil zeolite is studied in a 300-400 0 C temperature interval. Under these conditions, selectivity of p-diethylbenzene in H-ultrasil is 42.1-44.4%. It is established that increasing concentration of lanthanum on H-ultrasil makes reduction of porous volume, essential decrease in concentration of the strong acid centers that in turn leads to increase selectivity on pdiethylbenzene. By the increase in concentration of lanthanum in H-ultrasil to 5.0 wt. % selectivity on pdiethylbenzene increases to 74.5%.
The conversion of ethanol to hydrocarbons in the presence of lanthanum-modified ZSM-5 zeolite in the temperature range 3000 – 4500C at flow-type atmospheric pressure was studied and it was shown that the modification of ZSM-5 zeolite and imposed temperature affect the distribution of ethanol conversion products. Modification of HZSM-5 zeolite with lanthanum plays an important role in increasing the yield of isoparaffin hydrocarbons, as well as has a substantial impact on the quality and octane number of the catalyst. The catalyst obtained from the conversion of ethanol at 3000 – 3500C complies with the Euro-5 standard for the content of benzene (<1.0%), aromatic (<30%) and olefin (<2.0%) hydrocarbons
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