The Effect of Functional Group Polarity in Palladium Immobilized Multiwalled Carbon Nanotube Catalysis: Application in Carbon-Carbon Coupling Reaction
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作者:
Chandra, Boggarapu Praphulla
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Sri Sathya Sai Inst Higher Learning, Dept Chem, Prasanthinilayam 515134, India
Univ Washington Bothell, Sch Sci Technol Engn & Math, Bothell, WA 98011 USASri Sathya Sai Inst Higher Learning, Dept Chem, Prasanthinilayam 515134, India
Chandra, Boggarapu Praphulla
[1
,2
]
Wu, Zheqiong
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New Jersey Inst Technol, Dept Chem & Environm Sci, Newark, NJ 07102 USASri Sathya Sai Inst Higher Learning, Dept Chem, Prasanthinilayam 515134, India
Wu, Zheqiong
[3
]
Ntim, Susana Addo
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New Jersey Inst Technol, Dept Chem & Environm Sci, Newark, NJ 07102 USASri Sathya Sai Inst Higher Learning, Dept Chem, Prasanthinilayam 515134, India
Ntim, Susana Addo
[3
]
Rao, Golakoti Nageswara
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Sri Sathya Sai Inst Higher Learning, Dept Chem, Prasanthinilayam 515134, IndiaSri Sathya Sai Inst Higher Learning, Dept Chem, Prasanthinilayam 515134, India
Rao, Golakoti Nageswara
[1
]
Mitra, Somenath
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New Jersey Inst Technol, Dept Chem & Environm Sci, Newark, NJ 07102 USASri Sathya Sai Inst Higher Learning, Dept Chem, Prasanthinilayam 515134, India
Mitra, Somenath
[3
]
机构:
[1] Sri Sathya Sai Inst Higher Learning, Dept Chem, Prasanthinilayam 515134, India
[2] Univ Washington Bothell, Sch Sci Technol Engn & Math, Bothell, WA 98011 USA
[3] New Jersey Inst Technol, Dept Chem & Environm Sci, Newark, NJ 07102 USA
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.