01615nas a2200181   4500008004100000022001400041245008200055210006900137260000900206300001400215490000700229520098500236100002301221700002801244700002101272700003201293856010801325       2023                        eng d  a0888-588500aWadsworth-emmons reaction by using the fluorapatite catalyst: kinetic studies0 aWadsworthemmons reaction by using the fluorapatite catalyst kine  cMAY   a7901-79110 v623 a<p>
	Wadsworth-Emmons reaction was successfully carriedout byusing the fluorapatite (FAP) catalyst. The reaction of 2-methoxybenzaldehydeand triethylphosphonoacetate using FAP afforded &amp; alpha;,&amp; beta;-unsaturatedester with 100% conversion and 80% selectivity. A kinetic model wasvalidated at different temperatures by Langmuir-Hinshelwood-Hougen-Watson(LHHW), and the absence of mass transfer resistance was verified bythe Weisz Prater criterion. The effect of different catalysts, temperature,catalyst loading, solvent, mole ratio, and speed of stirring was studied.The FAP catalyst was characterized by Fourier transform infrared spectroscopy,Brunauer-Emmett-Teller method, nitrogen adsorption-desorption,transmission electron microscopy, energy-dispersive X-ray spectroscopy,temperature programmed desorption (TPD-NH3), X-ray diffraction,and X-ray photoelectron spectroscopy. The FAP catalyst was found tobe stable up to three recycles with no loss in activity.</p>
1 aVishwakarma, Rakhi1 aVinod, Chathakudath, P.1 aRathod, Virendra1 aKantam, Mannepalli, Lakshmi  uhttp://library.ncl.res.in/content/wadsworth-emmons-reaction-using-fluorapatite-catalyst-kinetic-studies01440nas a2200181   4500008004100000022001400041245008500055210006900140260000900209300001400218490000700232520080200239100002401041700003601065700002101101700003201122856010401154       2024                        eng d  a0888-588500aKinetic model of hydrogenation of glucose to sorbitol on a Ni/Bentonite catalyst0 aKinetic model of hydrogenation of glucose to sorbitol on a NiBen  cMAR   a4771-47810 v633 a<p>
	In the present work, we studied the hydrogenation of glucose to sorbitol using a nickel/bentonite catalyst. The Ni/bentonite catalyst was prepared by the wet impregnation method and characterized by different methods to understand the catalyst surface morphology, surface area, metal content, pore size, etc. Different reaction parameters such as temperature, hydrogen pressure, metal loading, catalyst loading, and agitation speed were studied to achieve a glucose conversion of 96.8% and a sorbitol selectivity of 95.3%. The reusability test was performed to examine the stability of the catalyst. The kinetic models such as the Eley-Rideal and Langmuir-Hinshelwood-Hougen-Watson models were used to study the hydrogenation of glucose and activation energy required for the reaction.</p>
1 aPandya, Harmitkumar1 aVinod, Chathakudath, Prabhakara1 aRathod, Virendra1 aKantam, Mannepalli, Lakshmi  uhttp://library.ncl.res.in/content/kinetic-model-hydrogenation-glucose-sorbitol-nibentonite-catalyst