TY - JOUR
T1 - Nickel sulfide nanoparticles on alumina and unsupported for p-chloroaniline production
AU - Olivas, A.
AU - Rodríguez, J. R.
AU - Cardenas-Lizana, F.
AU - Cota-Leal, M.
AU - Keane, M. A.
N1 - Funding Information:
We thank F. Ruíz, E. Aparicio, I. Gradilla and G. Soto for the technical assistance (HRTEM, XRD, SEM-EDX and XPS respectively). We are grateful with M.Sc. F. Aguilera by grammar and spelling revision. M. Cota-Leal gratefully acknowledges the postdoctoral grant from the program DGAPA-UNAM. This work was supported by the Project IN107220 from DGAPA-PAPIIT, UNAM. J. R. Rodríguez thanks to CONACyT scholarship.
Publisher Copyright:
© 2022, S.C. Virtual Company of Phisics S.R.L. All rights reserved.
PY - 2022/5
Y1 - 2022/5
N2 - Due to the need for producing intermediate chemicals such as p-chloroaniline (p-CA) using more environmentally friendly and efficient processes, nanostructured nickel and nickel sulfide-based catalysts were synthesized and studied. The selective p-chloronitrobenzene (p-CNB) gas-phase hydrogenation to produce p-CA was tested. The catalysts were characterized by N2 physisorption (SBET), temperature-programmed reduction (TPR), X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS), transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS). The catalytic activity was evaluated in terms of conversion and selectivity towards p-CNB and p-CA, respectively. Based on the experimental results, the addition of sulfur promoted the selectivity towards p-CA in a range of temperature from 120 to 220 ºC. The selectivity towards p-CA was close to 100 %, avoiding the formation of undesirable side products. Therefore, it is suggested that sulfured-Ni based catalysts increase the surface acidity, which allowed improved hydrogenolysis of the N-O bond.
AB - Due to the need for producing intermediate chemicals such as p-chloroaniline (p-CA) using more environmentally friendly and efficient processes, nanostructured nickel and nickel sulfide-based catalysts were synthesized and studied. The selective p-chloronitrobenzene (p-CNB) gas-phase hydrogenation to produce p-CA was tested. The catalysts were characterized by N2 physisorption (SBET), temperature-programmed reduction (TPR), X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS), transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS). The catalytic activity was evaluated in terms of conversion and selectivity towards p-CNB and p-CA, respectively. Based on the experimental results, the addition of sulfur promoted the selectivity towards p-CA in a range of temperature from 120 to 220 ºC. The selectivity towards p-CA was close to 100 %, avoiding the formation of undesirable side products. Therefore, it is suggested that sulfured-Ni based catalysts increase the surface acidity, which allowed improved hydrogenolysis of the N-O bond.
KW - Hydrogenation
KW - Ni-based catalysts
KW - p-chloroaniline (p-CA)
KW - p-chloronitrobenzene (p-CNB)
KW - Sol-gel method
KW - Solvothermal method
UR - http://www.scopus.com/inward/record.url?scp=85130613156&partnerID=8YFLogxK
U2 - 10.15251/CL.2022.195.337
DO - 10.15251/CL.2022.195.337
M3 - Article
AN - SCOPUS:85130613156
SN - 1584-8663
VL - 19
SP - 337
EP - 352
JO - Chalcogenide Letters
JF - Chalcogenide Letters
IS - 5
ER -