webMar 25, 2000 · The catalytic degradation of high-density polyethylene (hdPE) over ultrastable Y zeolite in a semibatch reactor was studied at different heating rates and...
webDec 13, 2005 · Zeolites. Abstract. By using the IRMS-TPD method in which IR (infrared) and MS (mass spectroscopy) worked together, acid sites of USY (ultrastable Y) zeolite were...
webIt is known that highly dealuminated and acid leached DAY, frequently called US-EX (ultrastable extracted zeolite Y), shows very sharp vibration bands because of...
webAug 14, 2014 · The modification of commercial ultra-stable Y (USY) zeolite using citric acid (CA) and ammonium fluosilicate (AFS) was investigated. A series of factors including the...
webAug 19, 2019 · Ultrastable Y (USY) zeolite is an effective catalyst used for catalytic cracking in petroleum refining. This catalyst is prepared from ammonium Y zeolite by steaming at...
webJan 15, 2021 · In this work, scale-up effects of zeolite-based catalyst materials have been tested in aldol condensation as a model reaction for...












