Preparation and characterisation of amorphous mesoporous aluminophosphate and metal aluminophosphate as an efficient heterogeneous catalyst for transesterification reaction

Amorphous metal-aluminophosphate catalysts for aldol condensation of n-heptanal and benzaldehyde to jasminaldehyde

“…Amorphous aluminophosphate (AlP) and metal-aluminophosphates (MAlPs) have gained significant importance in catalysis owing to their flexible textural properties, surface acidity, and thermal stability [1][2][3]. The structural and acidic properties of amorphous AlP can be fine-tuned by controlling the preparation conditions and also by adding selected transition metals during the synthesis.…”

Highly efficient conversion of glycerol and t-butanol to biofuel additives over AlPO solid acid catalyst under microwave irradiation technique: kinetic study

“…This type of experimental measurement of the solid samples belonging to type IV isotherms, in addition to well-defined H2 and H3 hysteresis loops with P /P o (relative pressure) varying from 0.4-1 is shown in Figure 1. These results indicated the characteristics of mesoporous type of the catalytic materials [25]. All the samples namely ZrAlPO, FeAlPO, CuAlPO and ZnAlPO presented H2 hysteresis loop whereas AlPO presented H3 hysteresis loop.…”

“…It should be noted that successful replacement of eco-unfriendly acid catalyst (homogeneous) by the synthesis of amorphous mesoporous aluminophosphate (AlPO) as well as metal-aluminophosphate (m-AlPO) solid acid, is a promising approach in the next decades for several acid-catalysed reactions such as acetylation, esterification, hydrogenation, alkylation, hydroxylation, transesterification, rearrangement oxidation, hydrogenolysis etc. Those many organic applications were performed effectively to synthesize organic fine chemicals with m-AlPO catalyst due to its mesoporous nature such as vast pore size and extreme surface area [21][22][23][24][25][26][27][28][29][30].…”

Micron-Sized Single-Crystal-like CoAPO-5/Carbon Composites Leading to Hierarchical CoAPO-5 with Both Inter- and Intracrystalline Mesoporosity

“…Likewise, the goodness of this method could be not reduced to the preparation of crystalline materials. Thanks to the following of the kinetics of crystallization carried out for the CoAPO-5/C composites within the carbon matrix, it was possible to isolate an amorphous aluminophosphate material with notable textural properties (BET surface are of 288 m 2 /g and pore volume of 1.34 cm 3 /g, Table S1 of Supporting Information), which are enough to beat those of the materials resulting by very new methods or the conventional high-surface amorphous AlPOs prepared through coprecipitation of soluble Al and P sources in water. − These amorphous aluminophosphate materials, directly , or conveniently modified, , have found important catalytic applications in Fine Chemistry. They could be even competitive to the mesoporous AlPOs catalysts templated by surfactants, , because of the elevated price of the formers, their thermal instability , and limited control of their acidic–basic properties .…”