Catalytic Dehydrogenation of Light Alkanes on Metals and Metal Oxides

Sättler, Jesper J. H. B.; Ruiz‐Martínez, Javier; Santillan‐Jimenez, Eduardo; Weckhuysen, Bert M.

doi:10.1021/cr5002436

Cited by 1,715 publications

(1,870 citation statements)

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“…Most of the investment and growth [4][5][6] has been in the production of ethylene (CH 2 =CH 2 ), which is widely used as a chemical building block in the industrial synthesis of other compounds, particularly polythene (polyethylene). Ethylene was conventionally produced by processes broadly known as cracking, in which the components of naphtha fractions derived from crude oil are broken down into smaller molecules.…”

Section: E H E R M a N Smentioning

confidence: 99%

“…The findings could aid the development of industrial processes that exploit this abundant resource. See Letter p.605 4 ) into more-valuable products is shown in blue arrows. Methane is first converted into synthesis gas (a mixture of hydrogen and carbon monoxide), which is then turned into methanol (CH 3 OH).…”

Section: Methane Upgraded By Rhodiummentioning

confidence: 99%

“…This step requires a group of proteins called tethers, which can be extended coiled-coil proteins or multi-subunit tether complexes. Tethers determine whether a potential fusion interaction should occur, through recognition of specific proteins found on a vesicle surface, such as Rab proteins or coat proteins 4 .…”

Section: Bulky Tether Proteins Aid Membrane Fusionmentioning

confidence: 99%

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Methane upgraded by rhodium

Hermans¹

2017

Nature

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Section: E H E R M a N Smentioning

confidence: 99%

Section: Methane Upgraded By Rhodiummentioning

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Section: Bulky Tether Proteins Aid Membrane Fusionmentioning

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Methane upgraded by rhodium

Hermans¹

2017

Nature

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“…Sattler et al [2] were reviewed various type of catalytic dehydrogenation of light alkanes into other products namely methane, hydrogen, ethane and other series of alkenes. Several type of catalyst have been studied by researchers such as platinum-based, gallium oxide-based and vanadium oxide-based catalysts.…”

Section: Introductionmentioning

confidence: 99%

Role of Active Chromium Species on Different Support for Dehydrogenation of Propane

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et al. 2017

MJAS

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Dehydrogenation of propane (DHP) was studied over a series of Cr 2 O 3 -Al 2 O 3 and Cr 2 O 3 -SiO 2 catalysts, prepared by incipient wetness impregnation and sol gel (SG) method, respectively, to gain a better understanding of the nature and distribution of chromium (Cr) species and their catalytic function. To this end, the catalysts were characterized by N 2 -physisorption and X-ray diffraction (XRD). N 2 -physisorption analysis of Cr 2 O 3 -SiO 2 showed the relatively higher surface area of 391.1 m 2 /g, compared with Cr 2 O 3 -Al 2 O 3 of 224.3 m 2 /g. The combination method of sol gel and sonothermal also produced smaller particles size of catalyst with higher microporosity of 23.5% and smaller pores size of 6 nm. The good surface properties of Cr 2 O 3 -SiO 2 enabled the high conversion of propane of 55% at 550 °C. At higher temperature of 600 °C, the Cr species might be reduced into lower oxidation state and inhibit the catalytic behavior to produce hydrogen.Keywords: chromium (II) oxide, thermodynamic consideration, sonothermal, catalytic behavior, hydrogen energy Abstrak Tindak balas penyah-hidrogenan gas propana (DPP) telah dikaji menggunakan beberapa siri mangkin Cr 2 O 3 -Al 2 O 3 dan Cr 2 O 3 -SiO 2 yang dihasilkan melalui kaedah impregnasi basah dan sol gel (SG) method, untuk memahami sifat dan serakan spesies logam Cr dan fungsi pemangkinannya. Dalam kajian ini, mangkin diciri menggunakan kaedah jerapan gas N 2 dan pembelauan sinar X (XRD). Analisis jerapan N 2 bagi mangkin Cr 2 O 3 -SiO 2 menunjukkan ia mempunyai luas permukaan yang paling tinggi sebanyak 391.1 m 2 /g, berbanding mangkin Cr 2 O 3 -Al 2 O 3 sebanyak 224.3 m 2 /g. Kombinasi kaedah sol gel (SG) dan sonotermal menghasilkan mangkin yang bersaiz lebih kecil dengan keporosan mikro sebanyak 23.5% dan saiz liang sebanyak 6 nm. Ciri-ciri permukaan yang baik ditunjukkan oleh mangkin Cr 2 O 3 -SiO 2 menyumbang kepada aktiviti tindak balas yang baik dengan peratus penukaran propana yang tinggi sebanyak 55% pada suhu 550 °C. Pada suhu tindak balas 600 °C pula, spesies logam Cr boleh terturun kepada keadaan pengoksidaan yang lebih rendah dan merencat tindak balas pemangkin bagi menghasilkan gas hidrogen sebagai produk utama.Kata kunci: kromium (II) oksida, pendekatan termodinamik, sonotermal, sifat pemangkinan, tenaga hidrogen ISSN -2506 Wan Nor Roslam et al: ROLE OF ACTIVE CHROMIUM SPECIES ON DIFFERENT SUPPORT FOR DEHYDROGENATION OF PROPANE 120Introduction Propane is produced as a by-product of two other processes, natural gas processing and petroleum refining. The processing of natural gas involves removal of butane, propane, and large amounts of ethane from the raw gas, in order to prevent condensation of these volatiles in natural gas pipelines. Commonly, the dehydrogenation of propane can produce propene and hydrogen as a greener and future fuel sources and carried higher energy [1]. The reaction conditions play a major role to direct the reaction route and selected products. It is possible to produce hydrogen by catalytic dehydro...

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“…Within the library of bimetallic catalysts, archetypal Pt‐based catalysts promote a vast array of reactions,3 such as NO x reduction1 (e.g. Pt‐Rh) to alkane dehydrogenation4, 5, 6 (e.g. Pt‐In).…”

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Kinetics of Lifetime Changes in Bimetallic Nanocatalysts Revealed by Quick X‐ray Absorption Spectroscopy

et al. 2018

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Alloyed metal nanocatalysts are of environmental and economic importance in a plethora of chemical technologies. During the catalyst lifetime, supported alloy nanoparticles undergo dynamic changes which are well‐recognized but still poorly understood. High‐temperature O2–H2 redox cycling was applied to mimic the lifetime changes in model Pt13In9 nanocatalysts, while monitoring the induced changes by in situ quick X‐ray absorption spectroscopy with one‐second resolution. The different reaction steps involved in repeated Pt13In9 segregation‐alloying are identified and kinetically characterized at the single‐cycle level. Over longer time scales, sintering phenomena are substantiated and the intraparticle structure is revealed throughout the catalyst lifetime. The in situ time‐resolved observation of the dynamic habits of alloyed nanoparticles and their kinetic description can impact catalysis and other fields involving (bi)metallic nanoalloys.

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Catalytic Dehydrogenation of Light Alkanes on Metals and Metal Oxides

Cited by 1,715 publications

References 309 publications

Methane upgraded by rhodium

Methane upgraded by rhodium

Role of Active Chromium Species on Different Support for Dehydrogenation of Propane

Kinetics of Lifetime Changes in Bimetallic Nanocatalysts Revealed by Quick X‐ray Absorption Spectroscopy

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