Cobalt-nickel alloy catalysts for hydrosilylation of ketones synthesized by utilizing metal-organic framework as template

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Abstract

In this article, we report an approach to synthesize alloy Co-Ni nanoparticles encapsulated in carbon by utilization of the MOF, ZIF-67, as a sacrificial template. The alloy CoNi materials are synthesized by incipient wetness impregnation of cobalt-containing ZIF-67 with nickel(ii) nitrate followed by carbonization. The formation of alloy nanoparticles was verified by XRD and TEM analysis showed that they are distributed evenly throughout the entire material. The carbon encapsulating the alloy nanoparticles is N-doped and graphitic according to XPS analysis. Further characterization by ICP, N-2-physisorption, and SEM imaging was also performed. The CoNi materials exhibited promising activity in the catalytic hydrosilylation of ketones. A carbonization temperature of 800 degrees C provided the best catalyst for this transformation. The reaction conditions were optimized, different silanes tested, a time study conducted, and the heterogeneity of the catalysis assessed with different tests. Finally, a substrate scope of various ketones was examined.
Original languageEnglish
JournalCatalysis Science & Technology
Volume8
Issue number9
Pages (from-to)2434-2440
Number of pages7
ISSN2044-4753
DOIs
Publication statusPublished - 2018

Cite this

@article{646a227d21ad4123954bd0c3c51ff3de,
title = "Cobalt-nickel alloy catalysts for hydrosilylation of ketones synthesized by utilizing metal-organic framework as template",
abstract = "In this article, we report an approach to synthesize alloy Co-Ni nanoparticles encapsulated in carbon by utilization of the MOF, ZIF-67, as a sacrificial template. The alloy CoNi materials are synthesized by incipient wetness impregnation of cobalt-containing ZIF-67 with nickel(ii) nitrate followed by carbonization. The formation of alloy nanoparticles was verified by XRD and TEM analysis showed that they are distributed evenly throughout the entire material. The carbon encapsulating the alloy nanoparticles is N-doped and graphitic according to XPS analysis. Further characterization by ICP, N-2-physisorption, and SEM imaging was also performed. The CoNi materials exhibited promising activity in the catalytic hydrosilylation of ketones. A carbonization temperature of 800 degrees C provided the best catalyst for this transformation. The reaction conditions were optimized, different silanes tested, a time study conducted, and the heterogeneity of the catalysis assessed with different tests. Finally, a substrate scope of various ketones was examined.",
author = "Bennedsen, {Niklas Rosendal} and S{\o}ren Kramer and Mielby, {Jerrik J{\o}rgen} and S{\o}ren Kegn{\ae}s",
year = "2018",
doi = "10.1039/c8cy00150b",
language = "English",
volume = "8",
pages = "2434--2440",
journal = "Catalysis Science & Technology",
issn = "2044-4753",
publisher = "Royal Society of Chemistry",
number = "9",

}

TY - JOUR

T1 - Cobalt-nickel alloy catalysts for hydrosilylation of ketones synthesized by utilizing metal-organic framework as template

AU - Bennedsen, Niklas Rosendal

AU - Kramer, Søren

AU - Mielby, Jerrik Jørgen

AU - Kegnæs, Søren

PY - 2018

Y1 - 2018

N2 - In this article, we report an approach to synthesize alloy Co-Ni nanoparticles encapsulated in carbon by utilization of the MOF, ZIF-67, as a sacrificial template. The alloy CoNi materials are synthesized by incipient wetness impregnation of cobalt-containing ZIF-67 with nickel(ii) nitrate followed by carbonization. The formation of alloy nanoparticles was verified by XRD and TEM analysis showed that they are distributed evenly throughout the entire material. The carbon encapsulating the alloy nanoparticles is N-doped and graphitic according to XPS analysis. Further characterization by ICP, N-2-physisorption, and SEM imaging was also performed. The CoNi materials exhibited promising activity in the catalytic hydrosilylation of ketones. A carbonization temperature of 800 degrees C provided the best catalyst for this transformation. The reaction conditions were optimized, different silanes tested, a time study conducted, and the heterogeneity of the catalysis assessed with different tests. Finally, a substrate scope of various ketones was examined.

AB - In this article, we report an approach to synthesize alloy Co-Ni nanoparticles encapsulated in carbon by utilization of the MOF, ZIF-67, as a sacrificial template. The alloy CoNi materials are synthesized by incipient wetness impregnation of cobalt-containing ZIF-67 with nickel(ii) nitrate followed by carbonization. The formation of alloy nanoparticles was verified by XRD and TEM analysis showed that they are distributed evenly throughout the entire material. The carbon encapsulating the alloy nanoparticles is N-doped and graphitic according to XPS analysis. Further characterization by ICP, N-2-physisorption, and SEM imaging was also performed. The CoNi materials exhibited promising activity in the catalytic hydrosilylation of ketones. A carbonization temperature of 800 degrees C provided the best catalyst for this transformation. The reaction conditions were optimized, different silanes tested, a time study conducted, and the heterogeneity of the catalysis assessed with different tests. Finally, a substrate scope of various ketones was examined.

U2 - 10.1039/c8cy00150b

DO - 10.1039/c8cy00150b

M3 - Journal article

VL - 8

SP - 2434

EP - 2440

JO - Catalysis Science & Technology

JF - Catalysis Science & Technology

SN - 2044-4753

IS - 9

ER -