Controlling Size and Morphology of Copper and Copper-Nickel
Nanoparticles Supported on Porous Silica for Catalytic Ethanol
Dehydrogenation

k 2021

Controlling Size and Morphology of Copper and Copper-Nickel Nanoparticles Supported on Porous Silica for Catalytic Ethanol Dehydrogenation

POKORNÝ, Tomáš, Aleš STÝSKALÍK a Vít VYKOUKAL

Základní údaje

Originální název

Controlling Size and Morphology of Copper and Copper-Nickel Nanoparticles Supported on Porous Silica for Catalytic Ethanol Dehydrogenation

Název česky

Řízení velikosti a morfologie nanočástic mědi a slitiny mědi s niklem na porézním křemíku pro katalytickou dehydrogenaci etanolu

Autoři

POKORNÝ, Tomáš (203 Česká republika, domácí), Aleš STÝSKALÍK (203 Česká republika, domácí) a Vít VYKOUKAL (203 Česká republika, domácí)

Vydání

Nanocon 2021, 2021

Další údaje

Jazyk

angličtina

Typ výsledku

Prezentace na konferencích

Obor

20501 Materials engineering

Stát vydavatele

Česká republika

Utajení

není předmětem státního či obchodního tajemství

Kód RIV

RIV/00216224:14310/21:00134134

Organizační jednotka

Přírodovědecká fakulta

ISBN

978-80-88365-00-6

Klíčová slova anglicky

Nanoparticles; Nanocatalyst; Ethanol dehydrogenation; Supported nanoparticles; Copper nanoparticles

Změněno: 30. 5. 2023 09:27, Mgr. Tomáš Pokorný

Anotace

V originále

Controlling size and morphology of copper and copper-nickel nanoparticles supported on porous silica for catalytic ethanol dehydrogenation In heterogeneous catalysis, unique nanoparticles’ properties, especially a high percentage of surface atoms, are highly desired. Copper nanoparticles are active in (bio)ethanol dehydrogenation producing acetaldehyde. This catalytic reaction presents the first step in 1,3-butadiene production from ethanol and could become a sustainable substitution for current acetaldehyde and butadiene production (based on oil refinement). This research project deals with various copper and copper-nickel silica-supported nanoparticles synthesized by different methods: solvothermal hot-injection, dry impregnation, electrostatic impregnation, hydrolytic and non-hydrolytic sol-gel. Various synthetic methods offer metal nanoparticles with different morphologies, sizes (from atomic dispersion to 20 nm), and particle size distributions. Several techniques were used to study these catalysts: scanning transmission electron microscopy combined with electron dispersive spectroscopy, nitrogen porosimetry, thermogravimetry, x-ray photoelectron spectroscopy, and inductively coupled plasma atomic emission spectroscopy. The catalytic performance of prepared catalysts was tested in the ethanol dehydrogenation in a gas-phase fixed-bed catalytic reactor. Light-off catalyst curves were established from 180 °C to 290 °C; stability with time-on-stream was tested at 325 °C for 10 hours. Copper nanoparticles are highly active and selective in the desired reaction (up to 89 % ethanol conversion at 250 °C) but suffer from coking and particle sintering, hampering their long-term stability. Nickel addition enhanced low-temperature catalyst performance. However, the catalyst’s stability needs to be further improved. The work has been financially supported by the Czech Science Foundation under the project GJ20-03636Y.

Návaznosti

GJ20-03636Y, projekt VaV

Název: Nové katalyzátory pro přípravu 1,3-butadienu z ethanolu

Investor: Grantová agentura ČR, Nové katalyzátory pro přípravu 1,3-butadienu z ethanolu

Citovat

POKORNÝ, Tomáš, Aleš STÝSKALÍK a Vít VYKOUKAL. Controlling Size and Morphology of Copper and Copper-Nickel Nanoparticles Supported on Porous Silica for Catalytic Ethanol Dehydrogenation. In Nanocon 2021. 2021. ISBN 978-80-88365-00-6.

@proceedings{2287117,
   author = {Pokorný, Tomáš and Stýskalík, Aleš and Vykoukal, Vít},
   booktitle = {Nanocon 2021},
   keywords = {Nanoparticles; Nanocatalyst; Ethanol dehydrogenation; Supported nanoparticles; Copper nanoparticles},
   language = {eng},
   isbn = {978-80-88365-00-6},
   title = {Controlling Size and Morphology of Copper and Copper-Nickel Nanoparticles Supported on Porous Silica for Catalytic Ethanol Dehydrogenation},
   year = {2021}
}

TY  - CONF
ID  - 2287117
AU  - Pokorný, Tomáš - Stýskalík, Aleš - Vykoukal, Vít
PY  - 2021
TI  - Controlling Size and Morphology of Copper and Copper-Nickel Nanoparticles Supported on Porous Silica for Catalytic Ethanol Dehydrogenation
SN  - 9788088365006
KW  - Nanoparticles
KW  - Nanocatalyst
KW  - Ethanol dehydrogenation
KW  - Supported nanoparticles
KW  - Copper nanoparticles
N2  - Controlling size and morphology of copper and copper-nickel nanoparticles supported on porous silica for catalytic ethanol dehydrogenation In heterogeneous catalysis, unique nanoparticles’ properties, especially a high percentage of surface atoms, are highly desired. Copper nanoparticles are active in (bio)ethanol dehydrogenation producing acetaldehyde. This catalytic reaction presents the first step in 1,3-butadiene production from ethanol and could become a sustainable substitution for current acetaldehyde and butadiene production (based on oil refinement). This research project deals with various copper and copper-nickel silica-supported nanoparticles synthesized by different methods: solvothermal hot-injection, dry impregnation, electrostatic impregnation, hydrolytic and non-hydrolytic sol-gel. Various synthetic methods offer metal nanoparticles with different morphologies, sizes (from atomic dispersion to 20 nm), and particle size distributions. Several techniques were used to study these catalysts: scanning transmission electron microscopy combined with electron dispersive spectroscopy, nitrogen porosimetry, thermogravimetry, x-ray photoelectron spectroscopy, and inductively coupled plasma atomic emission spectroscopy. The catalytic performance of prepared catalysts was tested in the ethanol dehydrogenation in a gas-phase fixed-bed catalytic reactor. Light-off catalyst curves were established from 180 °C to 290 °C; stability with time-on-stream was tested at 325 °C for 10 hours. Copper nanoparticles are highly active and selective in the desired reaction (up to 89 % ethanol conversion at 250 °C) but suffer from coking and particle sintering, hampering their long-term stability. Nickel addition enhanced low-temperature catalyst performance. However, the catalyst’s stability needs to be further improved. The work has been financially supported by the Czech Science Foundation under the project GJ20-03636Y.
ER  -

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