Nanotubular TiO2-supported amorphous Co–B catalysts and their catalytic performances for hydroformylation of cyclohexene

Synthesis and Characterization of Rh/B–TNTs as a Recyclable Catalyst for Hydroformylation of Olefin Containing –CN Functional Group

“…There is no obvious rupture or fracture caused by the light reduction process. These are attributable to the dispersed Rh-containing compound, which plays the same stable supporting role as Co and Fe compounds reported in the literature [ 16 , 27 ]. Rh nanoparticles are well-dispersed on the inner and outer surfaces of the nanotubes without agglomeration.…”

“…In addition, the nano-confinement effect of TNTs may have a marked impact on the selectivity of hydroformylation. In our previous studies, we used TiO 2 nanotubes-supported Rh nanoparticles and amorphous Co–B catalysts to catalyze the hydroformylations of vinyl acetate [ 15 ] and cyclohexene [ 16 ]. According to previous reports, the acidity of the supports has a great influence on the catalytic activity.…”

Alkali and Alkaline Earth Cation-Decorated TiO2 Nanotube-Supported Rh Catalysts for Vinyl Acetate Hydroformylation

“…The assignment of the structure of titanate nanotubular was the subject of intense controversy [24]. In our previous report, the main diffraction peaks of TNTs were assigned as anatase phase of TiO 2 [9,25,26]. However, the samples indeed present four broad diffraction peaks located at 9.58 • , 24.36 • , 28.36 • , and 48.44 • which can be attributed to the (020), (110), (130), and (200) crystal planes of orthorhombic lepidocrocite-type titanate on the basis of literature [27][28][29].…”

Titanate Nanotube-Supported Au–Rh Bimetallic Catalysts: Characterization and Their Catalytic Performances in Hydroformylation of Vinyl Acetate

“…The TNTs were synthesized by a hydrothermal method based on a previous work [23]. Titanium dioxide was mixed with an aqueous NaOH solution, before the system was heated to 150 • C for 12 h with constant stirring.…”

“…Numerous inorganic and organic polymer materials, such as zeolite [18], activated carbon [19], porous organic polymers [20], nonmetal oxides [21] and metal-organic frameworks [22] have been developed as supports for rhodium for hydroformylation. Among these supports, titanate nanotubes (TNTs) with a large surface area and multi-wall structure have been reported as an excellent choice [23,24].…”