Metal—support interaction effects in the liquid-phase selective hydrogenation of 1,4-butynediol with nickel catalysts supported on AlPO4 and on other conventional non-reducible compounds

Campelo, J.M.; Guardeño, R.; Luna, Diego; Marinas, J. M.; Morales, J.; Tirado, J.L.

doi:10.1016/0304-5102(93)80058-3

Cited by 18 publications

(5 citation statements)

References 61 publications

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“…To gain an insight into the microstructural changes of the active Cu/ZnO/Al 2 O 3 catalyst under working conditions, in situ X-ray diffraction investigations of the various catalysts were performed (ESI{). 4,[17][18][19] As shown in Fig. 1, the X-ray diffraction patterns showed no significant changes in the phase composition of two of the active Cu/ZnO/Al 2 O 3 catalysts (0 and 8 min processing).…”

mentioning

confidence: 81%

A unique microwave effect on the microstructural modification of Cu/ZnO/Al2O3 catalysts for steam reforming of methanol

et al. 2005

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mentioning

confidence: 81%

A unique microwave effect on the microstructural modification of Cu/ZnO/Al2O3 catalysts for steam reforming of methanol

et al. 2005

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“…The salts of Keggin type-heteropoly acids (M 3 PW 12 [53] proceeded at 25 ºC to afford epoxycyclooctane in 90% and 85% yield, after 6 h and 24 h, respectively. Urea-H 2 O 2 /H 2 WO 4 /FAP was also used to promote epoxidation reactions [54].…”

Section: Apatitesmentioning

confidence: 99%

“…AlPO 4 -supported nickel catalyst in presence of hydrogen was used for hydrogenation of propargyl alcohols [11], but-2-yne-1,4-diol [12] and phenylacetylene [13].…”

Section: Aluminum Phosphatementioning

confidence: 99%

“…Natural phosphate used in our work was obtained from the Khouribga region (Morocco). Prior to use this Pd/ZrPO [41,38] Ni/AlPO [11,12,13,72,73] Rh/ZrPO [42,40,41] Ni/Cu/AlPO [13] Pt/ZrPO [38] Ni/AlPO/SiO2 [12] ZrPO/TiO2 [25,35] AlPO/Al2O3 [20,21, material requires initial treatments such as crushing and washing. For use in organic synthesis, the natural phosphate is treated by techniques involving attrition, sifting, calcinations (900 °C), washing and re-calcinations.…”

Section: -2 Natural Phosphatementioning

confidence: 99%

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Phosphates: New Generation of Liquid-Phase Heterogeneous Catalysts in Organic Chemistry

Sebti¹,

Zahouily²,

Lazrek³

et al. 2008

COC

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This two part review looks at the uses of phosphate based heterogeneous catalysts for a range of synthetic organic reactions. Many different phosphates are known and have been tested as catalysts in a wide range of reaction types, either as catalysts, or in combination with other species such as zinc chloride or KF. The first section deals with the wide variety of phosphates which have been utilized in organic chemistry, while the second focuses more tightly on catalysts derived from naturally occurring phosphates. In all cases, efficient reactions can be achieved and in many reactions, significant solvent effects have been noted. Of benefit is the fact that relatively benign solvents such as lower alcohols and water are often the most effective.

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“…As an alteration, dispersed Ni-based supported catalysts have been reported, [9][10] however, the present Ni-based catalysts are also not ideal for BYD direct hydrogenation due to their low activity/selectivity and deactivation. [11] As revealed by Campelo et al, [12] since the traditional Ni-based catalysts had a poor metal support interaction, the active metal site is usually liable to migrate under high temperature or liquid-phase conditions, thus resulting in the rapid structural or textural destructive of catalysts. In order to enhance the structural stability of Ni-based catalysts, we intended to apply a recently developed phyllosilicate-derived core-shell catalyst, [13][14] to the BYD liquid-phase hydrogenation.…”

Section: Introductionmentioning

confidence: 99%

Bimetallic Synergy Effects of Phyllosilicate‐Derived NiCu@SiO₂ Catalysts for 1,4‐Butynediol Direct Hydrogenation to 1,4‐Butanediol

Wang

Ya-ni

et al. 2019

ChemCatChem

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Hydrogenation of 1,4-butynediol (BYD) to 1,4-butanediol (BDO) is a two-step process, with an initial hydrogenation of BYD to 1,4-butenediol (BED) and the subsequent hydrogenation of BED to BDO. However, the BYD hydrogenation also involves many side reactions originated from the isomerization of BED. In order to inhibit the isomerization pathways, phyllosilicate-derived bimetallic NiCu@SiO 2 catalysts have been developed for efficient C�C/C=C hydrogenation in this work. Due to the formation of phyllosilicate matrix and highly dispersed metal nanoparticles, NiCu@SiO 2 showed total BYD conversion with extremely high BDO selectivity compared to a conventional impregnated Ni/SiO 2 catalyst. A remarkable result of NiCu@SiO 2 catalysts is that a new type of bimetallic catalytic sites responsible for the high hydrogenation activity can be differentiated from the Ni phyllosilicate matrix by the induction of Cu species, and these neighboring bimetallic sites with the help of weak acid phyllosilicate interface, can realize to stabilize the activated BED species (allyl alcohol form) adsorbed on the cooperative active sites, thus to avoid its isomerization to aldehyde form and unexpected C=O hydrogenolysis. Consequently, it enhanced the selectivity to the diol products BDO significantly. Owing to the benign improvement of three center synergy effect, 9Ni1Cu@SiO 2 possesses the optimum BYD direct hydrogenation ability with a rarely reported high selectivity of 90.5-94.5 % at 50°C and 1 MPa.[a] Dr.

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Metal—support interaction effects in the liquid-phase selective hydrogenation of 1,4-butynediol with nickel catalysts supported on AlPO4 and on other conventional non-reducible compounds

Cited by 18 publications

References 61 publications

A unique microwave effect on the microstructural modification of Cu/ZnO/Al2O3 catalysts for steam reforming of methanol

A unique microwave effect on the microstructural modification of Cu/ZnO/Al2O3 catalysts for steam reforming of methanol

Phosphates: New Generation of Liquid-Phase Heterogeneous Catalysts in Organic Chemistry

Bimetallic Synergy Effects of Phyllosilicate‐Derived NiCu@SiO₂ Catalysts for 1,4‐Butynediol Direct Hydrogenation to 1,4‐Butanediol

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Metal—support interaction effects in the liquid-phase selective hydrogenation of 1,4-butynediol with nickel catalysts supported on AlPO4 and on other conventional non-reducible compounds

Cited by 18 publications

References 61 publications

A unique microwave effect on the microstructural modification of Cu/ZnO/Al2O3 catalysts for steam reforming of methanol

A unique microwave effect on the microstructural modification of Cu/ZnO/Al2O3 catalysts for steam reforming of methanol

Phosphates: New Generation of Liquid-Phase Heterogeneous Catalysts in Organic Chemistry

Bimetallic Synergy Effects of Phyllosilicate‐Derived NiCu@SiO2 Catalysts for 1,4‐Butynediol Direct Hydrogenation to 1,4‐Butanediol

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Bimetallic Synergy Effects of Phyllosilicate‐Derived NiCu@SiO₂ Catalysts for 1,4‐Butynediol Direct Hydrogenation to 1,4‐Butanediol