The effect of phosphorus on the catalytic performance of nickel oxide in ethane oxidative dehydrogenation

Abstract

Adding P to NiO leads to a decrease of ethane conversion with an increase in ODH selectivity.

An Insight on the Electrocatalytic Mechanistic Study of Pristine Ni MOF (BTC) in Alkaline Medium for Enhanced OER and UOR

“…In the case of NiO, WCP exhibits first order characteristics peaks and second order peaks below and above 600 cm À1 respectively. [56,57] The peak at 1483 cm À1 is due to the magnon (2 M) oscillation. [51] The intense peaks at 503 and 1075 cm À1 indicate that the nonstoichiometric characteristics and 2LO mode of NiO respectively.…”

“…[51] The intense peaks at 503 and 1075 cm À1 indicate that the nonstoichiometric characteristics and 2LO mode of NiO respectively. [51,[56][57][58][59][60] In the case of Ni MOF, peaks at 1008 and 1610 cm À1 is associated with the C=C bond in the benzene ring of tricarboxylic acid. [58] All the observed peaks correlates to the reported studies.…”

Near 100% ethene selectivity achieved by tailoring dual active sites to isolate dehydrogenation and oxidation

“…The oxidative dehydrogenation of light alkanes to olefins (ODH) which are important building blocks for a handful of industrial processes is a well-known example of such a challenging reaction that is a promising alternative to the current industrial practice of steam cracking with no thermodynamic limitation, coke formation, and large CO 2 emission but difficult to realize commercialized utilization impeded by the liable deep oxidation [6][7][8][9] . This was because alkene is facile to be further oxidized before its desorption or re-adsorbed on the active sites of dehydrogenation (usually oxygen species) according to the Mars-van Krevelen mechanism 1,10,11 which resulted from its higher affinity and reactivity than alkane to most surfaces particularly for those of V-and Ni-based catalysts which have been studied most for ODH [12][13][14][15][16][17] . Extensive studies have contributed to manipulating the chemical environment of active oxygen species to decrease its insertion as large extent as possible concurrently with activation for C−H bond in alkane.…”

Oxidative Dehydrogenation of Propane over Ni–Al Mixed Oxides: Effect of the Preparation Methods on the Activity of Surface Ni(II) Species

“…It can be seen that the electrical conductivity decreases as follows: 4NiAl(V)-600 > 4NiAl(C)-600 > 4NiA l(U)-600, implying that the charge carrier concentration and mobility decrease in the same order [50]. The linear dependence (Fitting data see Table S3) suggests that the change of σ with T accords with the Arrhenius law [49]:…”

“…All catalysts are p-type semiconductors under oxygen and nitrogen since dσ/dP O 2 > 0 [49]. The positive holes, such as O − species in NiO-based catalysts as p-type semiconductors, are proved to be closely related to the alkane activation step [50][51][52].…”