The Effect of Functional Group Polarity in Palladium Immobilized Multiwalled Carbon Nanotube Catalysis: Application in Carbon–Carbon Coupling Reaction
Carbon nanotubes (CNTs) are effective supports for nanometals and together they represent hybrids that combine the unique properties of both. A microwave-induced reaction was used to deposit nanopalladium on carboxylated and octadecylamine functionalized multiwall CNTs, which were used to carry out...
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doaj-ed2f5bc6bd894359b89c43dfaafe96622020-11-25T02:17:26ZengMDPI AGApplied Sciences2076-34172018-09-0189151110.3390/app8091511app8091511The Effect of Functional Group Polarity in Palladium Immobilized Multiwalled Carbon Nanotube Catalysis: Application in Carbon–Carbon Coupling ReactionBoggarapu Praphulla Chandra0Zheqiong Wu1Susana Addo Ntim2Golakoti Nageswara Rao3Somenath Mitra4Department of Chemistry, Sri Sathya Sai Institute of Higher Learning, Prasanthi Nilayam 515134, IndiaDepartment of Chemistry and Environmental Science, New Jersey Institute of Technology, Newark, NJ 07102, USADepartment of Chemistry and Environmental Science, New Jersey Institute of Technology, Newark, NJ 07102, USADepartment of Chemistry, Sri Sathya Sai Institute of Higher Learning, Prasanthi Nilayam 515134, IndiaDepartment of Chemistry and Environmental Science, New Jersey Institute of Technology, Newark, NJ 07102, USACarbon nanotubes (CNTs) are effective supports for nanometals and together they represent hybrids that combine the unique properties of both. A microwave-induced reaction was used to deposit nanopalladium on carboxylated and octadecylamine functionalized multiwall CNTs, which were used to carry out C–C coupling reactions in dimethylformamide (DMF) and toluene. These hybrids showed excellent catalytic activity with yield as high as 99.8%, while its enhancement with respect to commercially available Pd/C catalyst reached as high as 109%, and the reaction times were significantly lower. The polarity of the functionalized form was found to be a significant factor with the polar carboxylated CNT showing better activity in DMF while the relatively nonpolar octadecyl amine was better in toluene. The results suggest the possibility of tailor making functionalized CNTs when used as catalyst supports.http://www.mdpi.com/2076-3417/8/9/1511Pd-CNT nanohybridsfunctionalized CNTspolaritysemi-homogeneous catalysisheck reaction |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Boggarapu Praphulla Chandra Zheqiong Wu Susana Addo Ntim Golakoti Nageswara Rao Somenath Mitra |
spellingShingle |
Boggarapu Praphulla Chandra Zheqiong Wu Susana Addo Ntim Golakoti Nageswara Rao Somenath Mitra The Effect of Functional Group Polarity in Palladium Immobilized Multiwalled Carbon Nanotube Catalysis: Application in Carbon–Carbon Coupling Reaction Applied Sciences Pd-CNT nanohybrids functionalized CNTs polarity semi-homogeneous catalysis heck reaction |
author_facet |
Boggarapu Praphulla Chandra Zheqiong Wu Susana Addo Ntim Golakoti Nageswara Rao Somenath Mitra |
author_sort |
Boggarapu Praphulla Chandra |
title |
The Effect of Functional Group Polarity in Palladium Immobilized Multiwalled Carbon Nanotube Catalysis: Application in Carbon–Carbon Coupling Reaction |
title_short |
The Effect of Functional Group Polarity in Palladium Immobilized Multiwalled Carbon Nanotube Catalysis: Application in Carbon–Carbon Coupling Reaction |
title_full |
The Effect of Functional Group Polarity in Palladium Immobilized Multiwalled Carbon Nanotube Catalysis: Application in Carbon–Carbon Coupling Reaction |
title_fullStr |
The Effect of Functional Group Polarity in Palladium Immobilized Multiwalled Carbon Nanotube Catalysis: Application in Carbon–Carbon Coupling Reaction |
title_full_unstemmed |
The Effect of Functional Group Polarity in Palladium Immobilized Multiwalled Carbon Nanotube Catalysis: Application in Carbon–Carbon Coupling Reaction |
title_sort |
effect of functional group polarity in palladium immobilized multiwalled carbon nanotube catalysis: application in carbon–carbon coupling reaction |
publisher |
MDPI AG |
series |
Applied Sciences |
issn |
2076-3417 |
publishDate |
2018-09-01 |
description |
Carbon nanotubes (CNTs) are effective supports for nanometals and together they represent hybrids that combine the unique properties of both. A microwave-induced reaction was used to deposit nanopalladium on carboxylated and octadecylamine functionalized multiwall CNTs, which were used to carry out C–C coupling reactions in dimethylformamide (DMF) and toluene. These hybrids showed excellent catalytic activity with yield as high as 99.8%, while its enhancement with respect to commercially available Pd/C catalyst reached as high as 109%, and the reaction times were significantly lower. The polarity of the functionalized form was found to be a significant factor with the polar carboxylated CNT showing better activity in DMF while the relatively nonpolar octadecyl amine was better in toluene. The results suggest the possibility of tailor making functionalized CNTs when used as catalyst supports. |
topic |
Pd-CNT nanohybrids functionalized CNTs polarity semi-homogeneous catalysis heck reaction |
url |
http://www.mdpi.com/2076-3417/8/9/1511 |
work_keys_str_mv |
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