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Operation of FCC with mixtures of regenerated and deactivated catalyst
(Elsevier Science, 2001-07)
The operation of FCC with mixtures of coked and regenerated catalyst was studied with a riser simulator reactor on two equilibrium catalysts at 550◦C. The coked catalysts maintain an activity level that enables them to be ...
Metathesis of methyl oleate over rhenium oxide-based catalysts supported on borated silica-alumina: catalyst recycling
(Elsevier Science BvAmsterdamHolanda, 2004)
Catalyst recycling in the epoxidation of alkenes catalyzed by MoO2(acac)(2) through precipitation with poly(ethylene oxide)
(Elsevier Science BvAmsterdamHolanda, 2002)
Water-soluble N-heterocyclic carbene platinum(0) complexes: Recyclable catalysts for the hydrosilylation of alkynes in water at room temperature
(American Chemical Society, 2012-04)
The synthesis and characterization of new water-soluble platinum(0) complexes bearing sulfonated N-heterocyclic carbene (NHC) and divinyltetramethylsiloxane (dvtms) ligands are described. These complexes, of the general ...
Nickel recycling through bioleaching of a Ni/Al2O3 commercial catalyst
(Elsevier B.V., 2020-08-01)
Bioleaching studies were carried out on a commercial nickel-based reforming catalyst using two acidophilic bacteria (Acidithiobacillus ferrooxidans and Acidithiobacillus thiooxidans) under several types of bioleaching mode ...
Evaluation of KHSO4 as a recyclable catalyst in the production of dehydrated castor oil to be applied in alkyd resins
(Elsevier, 2021-12)
Due to its lower solubility, this work proposes the use of KHSO4 as a re-usable heterogeneous catalyst in the dehydration of castor oil. Refined and degummed castor oil were considered to determine the effect of the ...
Recycling of mining waste in the synthesis of magnetic nanomaterials for removal of nitrophenol and polycyclic aromatic hydrocarbons
(2021-05-16)
Iron mining residues were successfully used in the fast and inexpensive sol-gel synthesis of magnetic hybrids (CoFe2O4/NOM), with water rich in natural organic matter (NOM) as solvent. XRD analyses revealed formation of ...
Silica-supported aluminum chloride as catalyst for the tetrahydropyranylation of thymol
(Elsevier Science, 2008-04)
The preparation, characterization, and performance of catalysts based on AlCl3 and different silica for the tetrahydropyranylation of thymol are reported. These catalysts were obtained by two procedures: incipient wetness ...
Synthesis, characterization and catalytic application of a new organometallic oligomer based on polyhedral oligomeric silsesquioxane
(2017-10-01)
Although homogeneous catalysts provide high performance and selectivity, the difficulty of separation and recycling of these catalysts has bothered the scientific community worldwide. Therefore, the demand for heterogeneous ...