First synthesis of SAPO molecular sieve with LTL-type structure by hydrothermal conversion of SAPO-37 with FAU-type structure

On the key role of aluminium and other heteroatoms during interzeolite conversion synthesis

“…Additionally, SAPO and ALPO IZC have been reported and a novel SAPO framework has been discovered (RHO, entry 4) using this synthesis technique. [194][195][196] Zones and Nakagawa achieved fast nucleation and growth of borosilicates using boron-beta ([B]BEA) as a starting reagent in the presence of a variety of organic SDAs (Table 1, entry 1). 185,197 Using other reagents ([B]MFI or amorphous sources), no reactivity was observed.…”

CO2-Induced Gate-Opening Adsorption on a Chabazite/Phillipsite Composite Zeolite Transformed from a Faujasite Zeolite Using Organic Structure-Directing Agent-Free Steam-Assisted Conversion

“…Furthermore, the interzeolite transformation, which transforms a zeolite starting material into different zeolite frameworks, has attracted considerable attention as an OSDA-free synthesis method. For example, interzeolite transformations from the FAU zeolite starting material to ABW-, , CHA-, ,, MER-, ANA-, , MFI-, , LTL-, *BEA-, RUT-, LEV-, MTN-, STF-, MTW-, and PHI-type zeolites have previously been reported. In addition to the faujasite (FAU)-type zeolite starting material, Goto et al used the LEV-type zeolite starting material and OSDA/seed-free interzeolite transformation to synthesize less-dense CHA-type zeolite, and Xie et al reported the MCM-49–ZSM-35 (MWW–FER) interzeolite conversion, wherein ZSM-35 was produced around MCM-49 particles to synthesize the ZSM-35/MCM-49 composite zeolite .…”

GAM-7: an organic–inorganic hybrid layered aluminophosphate crystal formed by zeolite transformation

“…[19][20][21][22] However, only a few outcomes on the IZC of AlPOs can be found in precursory reports. 23,24 Our groups have recently developed the IZC of aluminophosphates and metallo-aluminophosphates, designated as izcAP and izcMAP, respectively. For example, the izcAP of AlPO 4 -5 with the aid of pyrrolidine successfully yielded a zeolitic GAM-2 and the following calcination caused a topotactic transformation to a new zeolite GAM-3 having a 12-8-6 pore system.…”