Synthesis of Mo/V mixed oxide catalysts via crystallisation and spray drying—a novel approach for controlled preparation of acrolein to acrylic acid catalysts

One-step glycerol oxidehydration to acrylic acid on multifunctional zeolite catalysts

“…The characteristics of this zeolitic catalyst are explored using a combination of physicochemical techniques: XRD, nitrogen adsorption-desorption isotherms, Raman spectroscopy, NH 3 -TPD, XANES in the region of vanadium K-edge absorption, XPS, 13 A c c e p t e d M a n u s c r i p t 4 inhibits the formation of carbonaceous species by the oxidation of reactive carbon monomers before they oligomerize and block the active sites. The multifunctional feature of this catalyst enabled long-term control of the balance between the production of acrylic acid and the avoidance of carbon deposition, features that should contribute to integrated glycerol chemistry.…”

“…The advantage of using vanadium-based oxides for acrolein oxidation in the presence of molecular oxygen is that an oxidative atmosphere, in combination with the redox properties of the vanadium oxides, is selective towards acrylic acid and effective for inhibiting the deposition of carbonaceous and non-volatile compounds [12][13][14][15][16][17][18][19][20][21][22].…”

“…The spent catalysts (after the reaction) were placed into 4 mm zirconia rotors, using the same volume of sample. The 13 C NMR spectra were compared assuming the same bulk density for each sample and that the13 C signal was proportional to the amount of carbonaceous compounds deposited in the catalyst. The experimental conditions were a contact time of 2000 s, a pulse width of 2.4 s, and a frequency of 12 kHz.…”

Rational, Facile Synthesis and Characterization of the Neutral Mixed‐Metal Organometallic Oxides Cp*2MoxW6–xO17 (Cp* = C5Me5, x = 0, 2, 4, 6)

“…A drawback is the difficulty to obtain materials with a homogeneous metal distribution at the atomic level by the currently applied techniques (sputtering, CVD). [9] For catalytic applications, the use of polyoxometalates (POMs) can provide a "molecular scale" model for a better understanding of the interaction between the substrates and the oxide surface. [10][11][12] For several decades, polyoxometallic species have attracted much interest because of their great versatility, with applications from biology to materials science and catalysis.…”

Rational Design of a Bifunctional Catalyst for the Oxydehydration of Glycerol: A Combined Theoretical and Experimental Study

“…The performance of a selective oxidation catalyst is closely related to the reducibility of the lattice oxygen in the catalysts. 60 temperatures. The peaks were not exactly defined, but it was certain that a weaker metal-oxygen interaction was induced as the result of the incorporation of tungsten into MoV framework.…”