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Sökning: WFRF:(Sun Hongmin)

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  • Luo, Yi, et al. (författare)
  • A Facile and Green Method for the Synthesis of SFE Borosilicate Zeolite and Its Heteroatom-Substituted Analogues with Promising Catalytic Performances
  • 2018
  • Ingår i: Chemistry - A European Journal. - : Wiley. - 0947-6539 .- 1521-3765. ; 24:2, s. 306-311
  • Tidskriftsartikel (refereegranskat)abstract
    • Synthesis of SFE-type borosilcate zeolite was successfully carried out using a commercially available low-cost organic structure directing agent (OSDA) with ultra-low OSDA and water contents within a short crystallization time. Heteroatom (Al, Ti, V, or Fe)-substituted SFE-type zeolite analogues were also directly synthesized for the first time. The obtained Al containing zeolites exhibited promising catalytic performances in the disproportion-ation of isopropylnaphthalene.
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3.
  • Wang, Zhendong, et al. (författare)
  • Controllable direct-syntheses of delaminated MWW-type zeolites
  • 2020
  • Ingår i: Cuihuà xuébào. - 0253-9837 .- 1872-2067. ; 41:7, s. 1062-1066
  • Tidskriftsartikel (refereegranskat)abstract
    • A method for the direct syntheses of partially and fully delaminated MWW zeolites is reported herein. Two organic amines were introduced into the hydrothermal synthetic system: hexamethyleneimine (HMI), which acted as the structure-directing agent for the MWW layered structure; and dicyclohexylamine (DCHA), in the role of an in-situ delaminating agent. By varying the amount of DCHA, partially and fully delaminated MWW zeolites having two MWW structure layers and one single layer, respectively, were obtained. These were denoted as SCM-1 (Sinopec Composite Material) and SCM-6, respectively. The delaminated materials possess ultra-large external surface areas, and the transmission electron microscopy images illustrated their layered nature. In the reaction of liquid phase benzene alkylation with ethylene, SCM-1, the double-layered MWW zeolite, exhibited far superior catalytic performance compared to zeolite MCM-22.
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