The modification of the catalytic performance in the partial oxidation of acrolein by the addition of oxygen transferring compounds to a multicomponent oxidic catalyst

Alternative Reaction Engineering Concepts in Partial Oxidations on Oxidic Catalysts

“…Due to the high exothermicity of partial oxidations, the efficiency of the heat transfer leads to operational constraints. Even so, very high selectivities and yields can be achieved in some cases, for example in the formation of acrylic acid as reported in the patent (6), as well as in the open literature (7). Under such circumstances, there seems to be no need to alter the proven process.…”

“…In order to achieve this, the simplest network, a triangular scheme of three irreversible reactions [Eq. (1)], has been considered: This scheme is valid, for example, in the description of the partial oxidation of methanol to formaldehyde (12,13) and of acrolein to acrylic acid (7,14). In (12), it has been shown how the product selectivities depend on the different control volumes to be considered-reactor, catalyst grain, surface element of the active compound.…”

Partial Oxidation in the Integral Reactor: Possibilities of a Mathematical Description

“…A fractional reaction order referring to the educt i (a<1) is often observed in case of partial oxidations [4,5]. The assumption of an adsorption step of the educt molecule at the surface prior to any conversion leads to an expression that is numerically equivalent to Eq.…”

MoVW mixed metal oxides catalysts for acrylic acid production: from industrial catalysts to model studies

“…25 O 2.75 [7][8][9]. These MoVW mixed oxide catalysts have been improved over the years by adding more and more promoters [10][11][12][13][14][15][16][17][18][19]. Hence, it has become increasingly more difficult to fully understand the role of each element and each phase present in such multielement partial oxidation catalysts on an atomic level.…”