Portela, Raquel published the artcileMonolithic SiC supports with tailored hierarchical porosity for molecularly selective membranes and supported liquid-phase catalysis, Safety of Bis(2,2,6,6-tetramethylpiperidin-4-yl) decanedioate, the main research area is silicon carbide monolithic tailored hierarchical porosity liquid phase catalysis.
Monolithic support materials with the mech. resistance and thermal conductivity of SiC as well as tunable surface chem. and textural properties were developed for their use in catalytic membrane reactors. After heat treatment, the extruded SiC monoliths have a monomodal distribution of macropores of a few μm in diameter depending on the particle size of the starting material. A macroporous, defect-free, smoother skin was applied onto the external wall using a solution of sub-micrometer SiC particles. These monoliths with skin could be coated successfully with molecularly selective membranes, and thus have application in membrane reactor processes. Finally, metal oxide nanoparticles were infiltrated into the macropores to modify the surface texture and chem., allowing the immobilization of liquid phase catalysts. The resulting multimodal distribution of pore sizes could be tuned by the choice of SiC and oxide particle sizes, number of wash-coats and calcination temparature. Mesopores created between nanoparticles had diameters of roughly 40% of those of the nanoparticles. Small macropores, between 10-1000 nm, were also created, with bigger size and volume at higher calcination temparatures due to the metal oxide particles contraction. The developed materials were validated as support for PDMS membranes and for continuous gas-phase hydroformylation of 1-butene using Rh-diphosphite catalysts.
Catalysis Today published new progress about Agglomeration. 52829-07-9 belongs to class piperidines, name is Bis(2,2,6,6-tetramethylpiperidin-4-yl) decanedioate, and the molecular formula is C28H52N2O4, Safety of Bis(2,2,6,6-tetramethylpiperidin-4-yl) decanedioate.
Referemce:
Piperidine – Wikipedia,
Piperidine | C5H11N – PubChem