Now showing items 1-10 of 599
One-step oxidehydration of glycerol to acrylic acid using ETS-10-like vanadosilicates
Vanadosilicates isostructural to ETS-10 and AM-6 microporous materials were synthesized hydrothermally using derivatives of cis- and trans-3,5-dimethyl-piperidine as organic structure directing agents (SDAs) and were ...
Assessment of the flexural strength of two heat-curing acrylic resins for artificial eyes
Prosthetic eyes are artificial substitutes for the eyeball, made of heat-curing acrylic resin, serving to improve the esthetic appearance of the mutilated patient and his/her inclusion in society. The aim of this study was ...
Effect of disinfectant solutions on a denture base acrylic resin.
The aim of this study was to evaluate the hardness, roughness and mass loss of an acrylic denture base resin after in vitro exposure to four disinfectant solutions. Forty specimens (Clássico, Brazil) were prepared and ...
MONOMER UNITS DIFFERENTIATED SOLVATION IN AN ACRYLIC ACID CROSSLINKED POLYELECTROLYTE. A COMBINED HF/MD STUDY&
(Sociedad Chilena de Química, 2001)
The multiple benefits of glycerol conversion to acrolein and acrylic acid catalyzed by vanadium oxides supported on micro-mesoporous MFI zeolites
The ZSM-5 zeolite (MFI structure, Si/Al = 40) was treated using NaOH and either oxalic acid or HCl to obtain hierarchical materials with different characteristics, followed by impregnation with vanadium oxides (V2O5) to ...
One-step glycerol oxidehydration to acrylic acid on multifunctional zeolite catalysts
(Elsevier B.V., 2015-02-25)
The catalytic behavior of bifunctional V2O5/MFI catalysts with acid and oxidizing properties was investigated for the gas-phase oxidehydration of glycerol. One of the main reaction products was acrylic acid, produced by ...
Effect of weathering and thickness on roughness of acrylic resin and ocular button
Purpose: The aim of this study was to evaluate the roughness of colorless ocular button and four brands of colorless acrylic resins designed to fabricate ocular prosthesis as a function of weathering (1008 h) and different ...