فهرس المقالات SAPO-11 حرية الوصول المقاله صفحة الملخص نص كامل 1 - Preparation and characterization of template-free mordenite type zeolite and comparison of m-xylene isomerization reaction over mordenite and SAPO-11 Zahra Vosoughi Rahbari Mehrji Khosravan Ali Nemati Kharat