SAPO-34 ZEOLITE HAVING N-METHYLDIETHANOLAMINE AS TEMPLATING AGENT AND SYNTHESIS METHOD FOR THE ZEOLITE

摘要

Provided is a silicoaluminophosphate zeolite SAPO-34. Same is characterized in that the anhydrous chemical composition thereof is: mMDEA·(Si_xAl_yP_z)O₂, where MDEA is N-methyldiethanolamine distributed in zeolite cages and pores, m is the number of moles of N-methyldiethanolamine as a templating agent per mole of (Si_xAl_yP_z)O₂, m = 0.03-0.25, and x, y, and z respectively express the mole fractions of Si, Al, and P, respectively ranged as x = 0.01-0.30, y = 0.40-0.60, and z = 0.25-0.49, while x + y + z = 1. The synthesized silicoaluminophosphate zeolite SAPO-34 can be used as a catalyst in an acid-catalyzed reaction, such as a methanol-to-olefin reaction. In addition, also provided are applications of the SAPO-34 zeolite in terms of absorption and isolation of CH₄ and CO₂.