Efficient preparation of boehmite silica dopamine sulfamic acid as a novel nanostructured compound and its application as a catalyst in some organic reactions

Abstract

Nano-boehmite was prepared in water at room temperature using commercially available materials and applied as supports for the preparation of a new catalyst.

Boehmite silica sulfuric acid: as a new acidic material and reusable heterogeneous nanocatalyst for the various organic oxidation reactions

“…4a. In the TGA curves, physically adsorbed water mass loss occurred at temperatures below 250 °C as well as the endothermic weight loss at 300 °C is attributed to water loss from structural hydroxyl groups in the precursor [24]. In TGA/DTA curve of the boehmite-SSA, a weight loss of about 41 % from 200 to 800 °C is observed (Fig.…”

Biochar as heterogeneous support for immobilization of Pd as efficient and reusable biocatalyst in C–C coupling reactions

“…[5][6][7] When the size of particles is decreased, their surface area is increased, which will be lead to high capacity of catalyst loading. [1][2][3][4][5][6][7][8] For example, iron oxide, [9] mesoporous silica materials, [10] carbon nanotubes, [11] ionic liquids, [12] polymers, [13] graphene oxide, [14,15] heteropolyacids, [16] boehmite nanoparticles, [17] etc., have been used as catalyst supports; however, all of these materials require chemical procedures and chemical starting materials for their preparation which are expensive and not environmentally friendly. [1][2][3][4][5][6][7][8] For example, iron oxide, [9] mesoporous silica materials, [10] carbon nanotubes, [11] ionic liquids, [12] polymers, [13] graphene oxide, [14,15] heteropolyacids, [16] boehmite nanoparticles, [17] etc., have been used as catalyst supports; however, all of these materials require chemical procedures and chemical starting materials for their preparation which are expensive and not environmentally friendly.…”

Cu–S‐(propyl)‐2‐aminobenzothioate on magnetic nanoparticles: highly efficient and reusable catalyst for synthesis of polyhydroquinoline derivatives and oxidation of sulfides

“…For this reason, many methods involving various catalysts and oxidants have been reported for this organic oxidation. Concerning the use of a green oxidant, H 2 O 2 (with only water as a by‐product) has received attention because of its environmental implications, high atom efficiency, ready availability and lower cost compared to other oxidizing agents …”