Precursors of active Ni species in Ni/Al2O3 catalysts for oxidative dehydrogenation of ethane

Smoláková, Lucie; Botková, Šárka; Čapek, Libor; Priecel, Peter; Sołtysek, A.; Kout, M; Matějová, Lenka

doi:10.1016/s1872-2067(12)60672-x

Cited by 23 publications

(11 citation statements)

References 64 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The XRD patterns of the solids calcined at 400 and 500 °C indicated a good dispersion of NiO on the surface, as well as very small crystallite sizes. However, for NiO supported on SDA calcined at 1100 °C, very weak peaks corresponding to NiO are visible for 16% NiO loading, with crystallites smaller than 5 nm, much smaller than those reported in other similar studies [41,54].…”

Section: Supported Nio Catalystscontrasting

confidence: 63%

“…The same Ni-Fe mixed oxides were used by the authors in a different ethane ODH study after being deposited on γ-Al 2 O 3 and TiO 2 supports, which have shown very good results in ethane ODH [44] when compared with NiO [41]. Excellent catalytic activity was observed on γ-Al 2 O 3 , with NiFe-0.9/γ-Al 2 O 3 exhibiting 94% ethylene selectivity with more than 40% conversion at 400 °C.…”

Section: Promoted Bulk Nio Catalystsmentioning

confidence: 98%

“…Schuurman et al [23] also showed that the ethylene oxidation activity of NiO is lower than its ethane oxidation activity, thus explaining its interesting catalytic behavior in ethane ODH and demonstrating the potential of NiO-based systems in this reaction. A high number of studies focusing on ethane ODH over both unsupported and supported [41][42][43][44][53][54][55][56][57][58][59][60][61][62][63][64] NiO-based catalysts have been published till date and is discussed in detail below.…”

Section: Promoted Bulk Nio Catalystsmentioning

confidence: 99%

“…Smolakova et al [41] used Al 2 O 3 as support for NiO to investigate the effect of tetrahedral and octahedral Ni species in NiO/Al 2 O 3 catalysts on the activity in ODH. Three different Ni precursors were investigated: nickel nitrate (at three different Ni con-centrations, noted Ni-Al-NO 3 -x, with x being the Ni amount), nickel acetate (also at three different Ni contents, noted Ni-Al-ac-x) and NiO mechanically mixed with alumina, noted Ni-Al-mm-x.…”

Section: Supported Nio Catalystsmentioning

confidence: 99%

See 3 more Smart Citations

Nickel oxide-based catalysts for ethane oxidative dehydrogenation: a review

Ivan¹,

Urdă²,

Marcu³

2022

Comptes Rendus. Chimie

View full text Add to dashboard Cite

NiO-based catalysts are among the most active and selective catalytic systems for lowtemperature oxidative dehydrogenation (ODH) of ethane into ethylene and, therefore, they have been extensively studied in the last twenty-five years. This paper reviews the most relevant works focusing on NiO-based catalysts for ethane ODH, including promoted and unpromoted, bulk and supported NiO. The effects of the nature of the promoter and of the support together with the influence of the method of preparation used on their activity in ethane ODH are discussed in detail as they were shown to be key factors controlling the catalytic performance, including the catalyst stability. The reaction mechanism involved in ethane ODH reaction over NiO-based catalysts is also presented and discussed.

show abstract

Section: Supported Nio Catalystscontrasting

confidence: 63%

Section: Promoted Bulk Nio Catalystsmentioning

confidence: 98%

Section: Promoted Bulk Nio Catalystsmentioning

confidence: 99%

Section: Supported Nio Catalystsmentioning

confidence: 99%

See 2 more Smart Citations

Nickel oxide-based catalysts for ethane oxidative dehydrogenation: a review

Ivan¹,

Urdă²,

Marcu³

2022

Comptes Rendus. Chimie

View full text Add to dashboard Cite

show abstract

“…Supported Ni catalysts are used in various industrially important chemical processes such as (de)hydrogenation, methanation, reforming, and hydrocracking [1][2][3][4][5]. Inorganic-pillared clays (PILCs) have been widely used as catalysts due to their high specific surface areas and pore volumes, and tunable pillars [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Promotion of Ni/clay catalytic activity for hydrogenation of naphthalene by organic modification of clay

Ren

Wen

Cao

et al. 2014

Chinese Journal of Catalysis

View full text Add to dashboard Cite

A Ni/montmorillonite (MMT) catalyst was prepared by an impregnation method using cetyltrimethylammonium bromide (CTAB)-pillared MMT as the supporting matrix and was characterized using infrared spectroscopy, X-ray diffraction, H2 temperature-programmed desorption, N2 adsorption-desorption, and ultraviolet diffuse reflectance spectroscopy. The catalytic activity of the Ni/MMT for the hydrogenation of naphthalene was also evaluated. The results show that the organic modification of MMT greatly improved the Ni dispersion and textural properties of the Ni/MMT catalyst. The as-prepared Ni/MMT catalyst showed high naphthalene conversion (88.2%) in the hydrogenation reaction; this is much higher than those achieved using Ni supported on pristine MMT (13.1%), Al2O3-pillared MMT (24.2%), and SBA-15 (68.2%). As a result of thermal decomposition of CTAB pillars during reduction of the Ni/MMT catalyst, the CTAB pillars mainly play a role in the Ni/MMT catalyst during impregnation. A mechanism for the promotion of the Ni/MMT catalytic activity by organic modification during impregnation is proposed.

show abstract

Promotion of the Ni/γ-Al2O3 catalyst for the hydrogenation of naphthalene by silica coating

Ren

Zhao

et al. 2019

Reac Kinet Mech Cat

View full text Add to dashboard Cite

Precursors of active Ni species in Ni/Al2O3 catalysts for oxidative dehydrogenation of ethane

Cited by 23 publications

References 64 publications

Nickel oxide-based catalysts for ethane oxidative dehydrogenation: a review

Nickel oxide-based catalysts for ethane oxidative dehydrogenation: a review

Promotion of Ni/clay catalytic activity for hydrogenation of naphthalene by organic modification of clay

Promotion of the Ni/γ-Al2O3 catalyst for the hydrogenation of naphthalene by silica coating

Contact Info

Product

Resources

About