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Alkylation of toluene with methanol over rare earth forms of Na?X, FAU and Na?Y, FAU
Authors:S Zieliski and Z Sarbak
Institution:(1) Institute of Chemistry, Adam Mickiewicz University, 60-780 Poznanacute, Poland
Abstract:(Laex, Na)-X, FAU, (Na, Yex)-X, FAU, (Laex, Na)-Y, FAU and (Na, Yex)-Y, FAU have been shown to be active and selective catalysts for the alkylation of toluene with methanol. Na–X, FAU and Na–Y, FAU modified by La3+ have the highest activity but a very stable activity was reached only on Y3+ forms. (Na, REex)-X FAU series prefer ortho-substitution while (Na, REex)-Y, FAU para-substitution. Brönsted acid centers and their strength are responsible for substition.
Bcyycylcyocy ncyacyjcydcyiecyncyocy, chcytcyocy (Laex, Na)-X, FAU, (Na, Yex)-X, FAU, (Laex, Na)-Y, FaU icy (Na, Yex)-Y, FAU yacyvcylcyyacyyucytcyscyyacy acykcytcyicyvcyncyycymcyicy icy scyiecylcyiecykcytcyicyvcyncyycymcyicy kcyacytcyacylcyicyzcyacytcyocyrcyacymcyicy acylcykcyicylcyicyrcyocyvcyacyncyicyyacy tcyocylcyucyocylcyacy mcyiecytcyacyncyocylcyocymcy. Na–X, FAU icy Na–Y, FAU, mcyocylcyicyfcyicytscyrcyocyvcyacyncyncyycyiecy La3+, ocybcylcyacydcyacyyucytcy ncyacyicyvcyycyscyshcyiecyjcy acykcytcyicyvcyncyocyscytcysoftcyyucy, ocydcyncyacykcyocy, scytcyacybcyicylcysoftcyncyacyyacy acykcytcyicyvcyncyocyscytcysoftcy bcyycylcyacy dcyocyscytcyicygcyncyucytcyacy lcyicyshcysoftcy ncyacy fcyocyrcymcyacykhcy Y3+. Vcy scyiecyrcyicyyacykhcy (Na, REex)-X, FAU pcyrcyiecydcypcyocychcytcyicytcyiecylcysoftcyncyycymcy yacyvcylcyyacyiecytcyscyyacy ocyrcytcyocy-zcyacymcyiecyshchcyiecyncyicyiecy, vcy tcyocy vcyrcyiecymcyyacy kcyacykcy vcy scyiecyrcyicyyacykhcy (Na, REex)-Y, FAU-pcyacyrcyacy-zcyacymcyiecyshchcyiecyncyicyiecy. Zcyacymcyiecyshchcyiecyncyicyiecy ncyacy tscyiecyncytcyrcyacykhcy kcyicyscylcyocytcy HARDcyrcyiocyncyscytcyecydcyacy ocybcyucyscylcyocyvcylcyiecyncyocy icykhcy scyicylcyocyjcy.
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