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Hydroamination of cyclohexene enhanced by ZnCl2 nanoparticles supported on chiral mesoporous silica
Ng E.-P.a, Law S.-P.a, Mukti R.R.b, Juan J.-C.c, Adam F.a
a School of Chemical Sciences, Universiti Sains Malaysia, Malaysia
b Division of Inorganic and Physical Chemistry, Institut Teknologi Bandung, Indonesia
c Nanotechnology and Catalysis Research Centre, Institute of Postgraduate Studies, University of Malaya, Malaysia
[vc_row][vc_column][vc_row_inner][vc_column_inner][vc_separator css=”.vc_custom_1624529070653{padding-top: 30px !important;padding-bottom: 30px !important;}”][/vc_column_inner][/vc_row_inner][vc_row_inner layout=”boxed”][vc_column_inner width=”3/4″ css=”.vc_custom_1624695412187{border-right-width: 1px !important;border-right-color: #dddddd !important;border-right-style: solid !important;border-radius: 1px !important;}”][vc_empty_space][megatron_heading title=”Abstract” size=”size-sm” text_align=”text-left”][vc_column_text]ZnCl2 supported on chiral mesoporous silica (Z-n-CMS, n=1, 3, 5mmol) as strong Lewis acid solid catalysts for hydroamination of cyclohexene is reported. XRD, HRTEM and EDX microanalysis revealed that the ZnCl2 nanoparticles (~10nm) were strongly bound and homogeneously distributed on the CMS surface and these supported nanoparticles showed catalytic synergistic effect (61.5% conversion) in the hydroamination of cyclohexene under mild temperature (60°C). The performance of the prepared supported catalyst was better than other common homogeneous and heterogeneous supported mesoporous catalysts which could be explained by its helical mesostructure that improved the diffusion of substrates and the accessibility to the Lewis acid sites. Furthermore, the Z-n-CMS solid catalyst could be easily separated from the reaction media and was recyclable with little reactivity loss (~9%) after four cycles of reaction. © 2014 Elsevier B.V.[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Author keywords” size=”size-sm” text_align=”text-left”][vc_column_text]EDX microanalysis,Heterogeneous lewis acid catalysts,Hydroaminations,Mesoporous catalysts,Mesoporous support,Supported nanoparticles,Synergistic effect,ZnCl2[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Indexed keywords” size=”size-sm” text_align=”text-left”][vc_column_text]Heterogeneous Lewis acid catalyst,Hydroamination,Mesoporous support,Nanoparticles,ZnCl2[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Funding details” size=”size-sm” text_align=”text-left”][vc_column_text]The authors would like to acknowledge USM RU (1001/PKIMIA/814127 and 1001/PKIMIA/811264) research grants for financial support. S.-P. Law would like to thank the MyMaster for the scholarship provided.[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”DOI” size=”size-sm” text_align=”text-left”][vc_column_text]https://doi.org/10.1016/j.cej.2013.12.090[/vc_column_text][/vc_column_inner][vc_column_inner width=”1/4″][vc_column_text]Widget Plumx[/vc_column_text][/vc_column_inner][/vc_row_inner][/vc_column][/vc_row][vc_row][vc_column][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][/vc_column][/vc_row]