Optimization of synthesis conditions for preparation of ceramic (A-type zeolite) membranes in dehydration of ethylene glycol

Surface modification of mordenite in Nafion composite membrane for direct ethanol fuel cell and its characterizations: Effect of types of silane coupling agent

“…Adding silica-SH and silica-SO3H to the membrane decreased the methanol permeability by approximately 30% and 15%, respectively. Another way to reduce alcohol crossover is by using a zeolite such as NaAzeolite incorporated with Nafion which has been reported to successfully reduce alcohol crossover [15,16]. The study found that the methanol permeability of the Nafion composite membrane, incorporated with zeolite-NaA which was treated by APTS silane was up to 55.96% lower than that of a Nafion ® 117 membrane.…”

Optimization of Parameters and Methodology for the Synthesis of LTA-Type Zeolite Using Light Coal Ash

“…The residue has in its crystalline species such as quartz and mullite (Figure 2a). The mullite present in the ashes is the result of the reactions that occur during the combustion of coal and quartz; it is present in the precursor coal and does not melt in the burning conditions in the thermoelectric plants [15]. The morphology of the waste is spherical (Figure 2b) because the burning of the coal occurs in its pulverized form [28].…”

“…This can be seen in the number of papers that have been published about this zeolite concerning novel synthesis methods, diversification of applications, and upgrading of waste materials containing aluminum and silicon for raw synthesis materials. The synthesis of zeolite LTA can be performed using fly ash as a source of silicon and aluminum [1,[13][14][15][16][17][18][19][20]. These studies show different methods of synthesis.…”

Ceramic membrane synthesis based on alkali activated blast furnace slag for separation of water from ethanol

“…Different membranes can be used in pervaporation, including ceramic [10] polymeric [11] and composite [2,12] membranes. Ceramic membranes have attracted more interest because of their chemical and thermal stability, applicability in high pressure operation, durability and mechanical stability [13][14][15].…”

“…Ceramic membranes are being made as microfiltration [16], ultrafiltration [2,3], nanofilteration [2], and zeolite [5,10] membranes. Purpose of pervaporation is mainly removal of water from organics, therefore in order to achieve an effective separation, zeolite membranes can be used.…”