BiPO4 decorated with Ni–Fe layered double hydroxide as a highly efficient and reusable heterogeneous catalyst for aldol condensation in green solvent

Bismuth phosphate nanoparticle catalyst for direct oxidation of methane into formaldehyde

“…45 Although bismuth phosphates (Fig. 1) have been mostly investigated for photocatalytic reactions, [46][47][48][49][50][51] their application to other reactions (e.g., oxidative dehydrogenation, 52-54 ammoxidation, 55 decomposition, 56 isomerization, 57 aldol condensation 58 ) including the direct oxidation of CH 4 has not been sufficiently explored. 23,26 In this paper, we report the selective oxidation of CH 4 to HCHO with molecular oxygen (O 2 ) as the sole oxidant over a BiPO 4 catalyst using a fixed-bed flow reactor.…”

“…1) have been mostly investigated for photocatalytic reactions, 46–51 their application to other reactions ( e.g. , oxidative dehydrogenation, 52–54 ammoxidation, 55 decomposition, 56 isomerization, 57 aldol condensation 58 ) including the direct oxidation of CH 4 has not been sufficiently explored. 23,26…”

Study on the behavior and mechanism of NiFe-LDHs used for the degradation of tetracycline in the photo-Fenton process

“…24 A superior contender for a photocatalyst among the numerous LDHs is 3D NiFe-LDHs, which not only have high visible light absorption capabilities but also have better selective adsorption of pollutants than other LDHs. 25,26 There are, however, few publications on the photocatalytic degradation of tetracycline by NiFe-LDHs, and it is necessary to further investigate and optimize the impact of environmental factors on degradation performance. The development of 3D NiFe-LDHs nanoowers was accomplished in the present investigation using a straightforward solvothermal method.…”

Preparation of β‐hydroxy Ketones via High Efficient Aldol Reaction over Nickel Oxide Nanoparticles as a Powerful and Reusable Heterogeneous Catalyst: Central Composite Design

“…[14] In contrast, heterogeneous catalysts brings some advantages such as simple catalyst recovery, reduction of effluent streams and by-products, and high selectivity. [15,16] Various heterogeneous catalysts such as modified zeolite, [17] magnetically retrievable catalyst, [18] metal oxide, [19,20] mixed metal oxides, [21][22][23] and so on have been used in aldol condensations. Among them, metal oxides can cover the most proceedings and catalyst families used in variant industries.…”

“…These catalysts have several limitations, including possible corrosion, production of large amounts of contaminated wastewater, and high‐cost related to the catalyst recovery [14] . In contrast, heterogeneous catalysts brings some advantages such as simple catalyst recovery, reduction of effluent streams and by‐products, and high selectivity [15,16] . Various heterogeneous catalysts such as modified zeolite, [17] magnetically retrievable catalyst, [18] metal oxide, [19,20] mixed metal oxides, [21–23] and so on have been used in aldol condensations.…”