Study development of metal oxide compounds (Cu, Zn, Al) by metal preservatives (Zr) on HZSM-5. By settling cooperation between (Cu (NO3) 2 • 3H2O), (Zn (NO3) 2 • 6H2O) and (Al (NO3) 3 9H2O •) with Na2CO3 with Zn Al Cu ratio: 6: 3: is equal to:1 control the pH is equal to 7 and the temperature is equal to 70 degrees Celsius. To burn at 350° c. Three hours would be a compound oxide CuO-ZnO-Al2O3 or CZA best preparation of HZSM-5 zeolites. To do this, mix with HZSM-5 zeolites Zr from aqueous solution ZrOCl2.8H2O 0, 2, 4 and 6% by weight by the method how to dampen the oep fit. Mix together 30 minutes with a new solution. 1 hour to evaporate and then bake at 120 for one night and ◦C to burn at temperatures of 400° c. Time: 5 hours From the degradation of the TGA found tricks Al2 (CO3) 3, 153.488 temperature range and CuCO3 ZnCO3 degrees Celsius. To 423.257 degrees Celsius. Change the weight is equal to 7.963058% asanthan and Crystal Analysis section with the XRD techniques found that the compound was burning before the CZA oxide CuO and ZnO is burnt, but the latter found CZA CuO and
.HZSM-5 zeolites I found that p setting of the zeolites scroll it to the right increases the volume of the Zr, which results in a trial match to analyze the chemical composition of the elements with XRF techniques found that the burning of CZA before or after elements Cu, Zn and Al did not differ significantly. Similarly, HZSM-5 zeolites I found the quantity of the Zr 2 volume increasing by 6%, and 4, respectively. In addition, an analysis of surface area and pore volume, filled with tricks BET specific surface area that there are 87 CZA.92 square meters per gram, the volume of the pores is equal to a cubic centimeter 0.3144 per gram and the average pore size values (Average Pore Diameter) is equal to 222.9 Angstrom in zeolites HZSM-5 found that 4% of the amount of Zr. as a result, most have plenty of surface area equal to 509.4 cubic meters per gram. Make the volume of pores increases. Is equal to 0.9117 cubic centimeters per gram and the average pore size is equal to 24.09 Angstrom.
การแปล กรุณารอสักครู่..