Diethyl Ether Production during Catalytic Dehydration of Ethanol over Ru- and Pt- modified H-beta Zeolite Catalysts

Kamsuwan, Tanutporn; Praserthdam, Piyasan; Jongsomjit, Bunjerd

doi:10.5650/jos.ess16108

Cited by 45 publications

(33 citation statements)

References 28 publications

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“…The shorter distances between two nearby neighboring acid sites high acid density probably lead to rapidly react to form diethyl ether as seen in Scheme 1. This rationale can be used to clarify the fact that why diethyl ether selectivity is dominant at low temperature 5,10 .…”

Section: Ethanol Dehydration Reactionmentioning

confidence: 99%

Catalytic Ethanol Dehydration to Ethylene over Nanocrystalline χ- and γ-Al2O3 Catalysts

Janlamool

Jongsomjit

2017

J. Oleo Sci.

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Section: Ethanol Dehydration Reactionmentioning

confidence: 99%

Catalytic Ethanol Dehydration to Ethylene over Nanocrystalline χ- and γ-Al2O3 Catalysts

Janlamool

Jongsomjit

2017

J. Oleo Sci.

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“…It appeared that different metals doped on support may be suitable for good surface basicities for ethanol dehydrogenation. Many pieces of research on the reaction of alcohols using heterogeneous catalysts have focused principally on highly active noble metals, such as platinum [9] and gold [10][11][12]. Therefore, more lasting solutions based on cheap, harmless, and stable metals to replace noble metals would be appealing.…”

Section: Introductionmentioning

confidence: 99%

Dehydrogenation of Ethanol to Acetaldehyde over Different Metals Supported on Carbon Catalysts

2019

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Recently, the interest in ethanol production from renewable natural sources in Thailand has been receiving much attention as an alternative form of energy. The low-cost accessibility of ethanol has been seen as an interesting topic, leading to the extensive study of the formation of distinct chemicals, such as ethylene, diethyl ether, acetaldehyde, and ethyl acetate, starting from ethanol as a raw material. In this paper, ethanol dehydrogenation to acetaldehyde in a one-step reaction was investigated by using commercial activated carbon with four different metal-doped catalysts. The reaction was conducted in a packed-bed micro-tubular reactor under a temperature range of 250–400 °C. The best results were found by using the copper doped on an activated carbon catalyst. Under this specified condition, ethanol conversion of 65.3% with acetaldehyde selectivity of 96.3% at 350 °C was achieved. This was probably due to the optimal acidity of copper doped on the activated carbon catalyst, as proven by the temperature-programmed desorption of ammonia (NH3-TPD). In addition, the other three catalyst samples (activated carbon, ceria, and cobalt doped on activated carbon) also favored high selectivity to acetaldehyde (>90%). In contrast, the nickel-doped catalyst was found to be suitable for ethylene production at an operating temperature of 350 °C.

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“…Among the transition metal oxides, TiO 2 has been widely used as a support in heterogeneous catalysts due to its suitable surface areas, thermal stability and mechanical resistance [9,10]. Furthermore, the modification by doping of the active noble and transition metals such as Cs [11], Au/Ag/Cu [12], Al [13], Ru [14], Pt, Pd [15], Mo [16], and W [17,18] into catalyst supports apparently affected the catalyst selectivity and activity.…”

Section: Introductionmentioning

confidence: 99%

Ethanol Dehydration over WO₃/TiO₂Catalysts Using Titania Derived from Sol-Gel and Solvothermal Methods

Tresatayawed

Glinrun²,

Jongsomjit

2019

International Journal of Chemical Engineering

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The present study aims to investigate the catalytic ethanol dehydration to higher value products including ethylene, diethyl ether (DEE), and acetaldehyde. The catalysts used for this reaction were WO3/TiO2 catalysts having W loading of 13.5 wt.%. For a comparative study, the TiO2 supports employed were varied by two different preparation methods including the sol-gel and solvothermal-derived TiO2 supports, denoted as TiO2-SG and TiO2-SV, respectively. It is obvious that the different preparation methods essentially altered the physicochemical properties of TiO2 supports. It was found that the TiO2-SV exhibited higher surface area and pore volume and larger amounts of acid sites than those of TiO2-SG. As a consequence, different characteristics of support apparently affected the catalytic properties of WO3/TiO2 catalysts. As expected, both catalysts WO3/TiO2-SG and WO3/TiO2-SV exhibited increased ethanol conversion with increasing temperatures from 200 to 400°C. It appeared that the highest ethanol conversion (ca. 88%) at 400°C was achieved by the WO3/TiO2-SV catalysts due to its high acidity. It is worth noting that the presence of WO3 onto TiO2-SV yielded a remarkable increase in DEE selectivity (ca. 68%) at 250°C. In summary, WO3/TiO2-SV catalyst is promising to convert ethanol into ethylene and DEE, having the highest ethylene yield of ca. 77% at 400°C and highest DEE yield of ca. 26% at 250°C. These can be attributed to proper pore structure, acidity, and distribution of WO3.

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Diethyl Ether Production during Catalytic Dehydration of Ethanol over Ru- and Pt- modified H-beta Zeolite Catalysts

Cited by 45 publications

References 28 publications

Catalytic Ethanol Dehydration to Ethylene over Nanocrystalline χ- and γ-Al<sub>2</sub>O<sub>3</sub> Catalysts

Catalytic Ethanol Dehydration to Ethylene over Nanocrystalline χ- and γ-Al<sub>2</sub>O<sub>3</sub> Catalysts

Dehydrogenation of Ethanol to Acetaldehyde over Different Metals Supported on Carbon Catalysts

Ethanol Dehydration over WO₃/TiO₂Catalysts Using Titania Derived from Sol-Gel and Solvothermal Methods

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Diethyl Ether Production during Catalytic Dehydration of Ethanol over Ru- and Pt- modified H-beta Zeolite Catalysts

Cited by 45 publications

References 28 publications

Catalytic Ethanol Dehydration to Ethylene over Nanocrystalline χ- and γ-Al<sub>2</sub>O<sub>3</sub> Catalysts

Catalytic Ethanol Dehydration to Ethylene over Nanocrystalline χ- and γ-Al<sub>2</sub>O<sub>3</sub> Catalysts

Dehydrogenation of Ethanol to Acetaldehyde over Different Metals Supported on Carbon Catalysts

Ethanol Dehydration over WO3/TiO2Catalysts Using Titania Derived from Sol-Gel and Solvothermal Methods

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Ethanol Dehydration over WO₃/TiO₂Catalysts Using Titania Derived from Sol-Gel and Solvothermal Methods