02252nas a2200265   4500008004100000022001400041245009400055210006900149260000800218300001500226490000600241520142600247653001401673653001901687653002101706653001101727653000901738653001001747653001101757100002301768700002801791700002201819700002601841856011901867       2022                        eng d  a2365-654900aCatalytic activity of CuFe2O4 spinel oxide for liquid-phase oxidation of cinnamyl alcohol0 aCatalytic activity of CuFe2O4 spinel oxide for liquidphase oxida  cFEB  ae2021044410 v73 a<p>
	CuFe2O4 spinel oxide catalyst was synthesized by sol-gel and co-precipitation methods for liquid phase oxidation of Cinnamyl alcohol (CnOH) to Cinnamaldehydes (CnHO) using tert-Butyl hydroperoxide (TBHP) as oxidising agent. Spinel oxide catalyst was characterized by different techniques such as X-ray diffraction (XRD), N-2 adsorption-desorption, BET surface area, and X-ray photoelectron spectroscopy (XPS) to understand the structural, physical properties and oxidation state of the catalyst. The result shows that catalyst prepared by sol-gel method was found higher surface area and smaller crystalline size than co-precipitation method. XPS data confirm the formation of Cu2+ in the spinel which helps to improve the catalytic activity of oxidation. This reaction follows radical mechanism, and exhibited 76.7 % of CnOH conversion and 68.4 % of CnHO, and 24.8 % benzaldehyde (benzald) selectivity using TBHP at 60 degrees C. Kinetic data reveal that 41.2 kJ/mol of activation energy for the reaction. The higher activity of spinel oxide catalyst could be due synergetic effect of spinel (88 %) and oxides (12 %) formed in the catalyst, which helps to provide the oxygen during reaction. The contribution of Cu2+ is higher in sol-gel than co-precipitation, which may provide the better reactivity of catalyst. This work helps to select the effective and cost-effective catalyst for the oxidation of CnOH.</p>
10aCatalysts10aCinnamaldehyde10aCinnamyl Alcohol10aCupper10airon10aoxide10aspinel1 aDange, Rutvija, M.1 aNiphadkar, Prashant, S.1 aBokade, Vijay, V.1 aNandanwar, Sachin, U.  uhttps://library.ncl.res.in/content/catalytic-activity-cufe2o4-spinel-oxide-liquid-phase-oxidation-cinnamyl-alcohol02014nas a2200241   4500008004100000245006700041210006700108260000800175300001100183490000700194520127900201653001501480653001901495653002001514653001701534653002001551653001301571100001901584700002401603700002001627700002601647856009901673       2024                        eng d00aContinuous flow synthesis of hierarchical low silica X zeolite0 aContinuous flow synthesis of hierarchical low silica X zeolite  cJUN  a1090470 v393 a<p>
	Zeolites, renowned for their versatile applications in catalysis, adsorption, and ion exchange, have long been synthesized using conventional batch processes. However, the inherent limitations of these methods, such as resource-intensive conditions and inconsistent product quality, underscore the need for a sustainable and efficient approach. In this study, a continuous flow synthesis process was established for the synthesis of industrially important low silica X (LSX) zeolite using a tubular reactor. The synthesis gel was subjected to aging for 5 days at room temperature to facilitate nucleation and crystal growth combined with the fast-heating rate in a tubular reactor at 363 K &amp; 1.1 atm., which in turn produces LSX after 40 min. The synthesized product was confirmed by the XRD, FE-SEM, EDS, XRF, TEM, and N2 adsorption-desorption; the data was compared with the LSX sample synthesized by batch process. The result implies that LSX prepared by continuous flow has a pure phase of LSX with the hierarchical structure, which provides better adsorption capacity of CO2 at 298 K up to 20 bar. Due to continuous flow synthesis, the crystallization time was reduced and faster kinetics which may be helpful for scale-up the process for LSX synthesis.</p>
10aAdsorption10aCarbon dioxide10acontinuous flow10aLow silica X10aTubular reactor10azeolites1 aAdarsh, V., K.1 aShrotri, Aadesh, R.1 aBirje, Amit, R.1 aNandanwar, Sachin, U.  uhttps://library.ncl.res.in/content/continuous-flow-synthesis-hierarchical-low-silica-x-zeolite02017nas a2200169   4500008004100000022001400041245007300055210006900128260000900197300001400206490000700220520145100227100002001678700002201698700002601720856010101746       2026                        eng d  a0888-588500aCation-exchanged Al-substituted ETAS-10 for adsorption of CO2 and N20 aCationexchanged Alsubstituted ETAS10 for adsorption of CO2 and N  cMAR   a6115-61260 v653 a<p>
	In this study, Al-substituted ETAS-10 was synthesized via a seed-assisted hydrothermal method by varying the Al:Ti molar ratio. The material was modified via ion exchange with Li+, Ca2+, K+, and Sr2+ cations to tailor its adsorption behavior. The structural, morphological, and textural properties of the synthesized adsorbents were characterized by using XRD, FE-SEM, HR-TEM, EDS, Raman spectroscopy, CO2-TPD, and N2 physisorption. Li+-ETAS-10 exhibited a higher surface area and stronger basic sites available for the CO2 adsorption compared to the studied samples. The equilibrium adsorption isotherms of CO2 and N2 were measured at 25 degrees C and pressures up to 20 bar. Among the studied samples, ETAS-10 with an Al/Ti ratio of 0.2 showed the highest CO2 uptake of 3.19 mmol/g at 20 bar. This performance was enhanced by Li+ cation exchange, which increased the CO2 capacity to 3.52 mmol/g due to improved microporosity and stronger electrostatic interactions between CO2 molecules and the small radii of the Li+ cation. The adsorption isotherms follow the Langmuir model, indicating that adsorption behavior aligns with Langmuir assumptions across the investigated pressure range. Overall, the results highlight the synergistic role of framework Al incorporation and targeted cation exchange in enhancing the CO2 adsorption performance of ETAS-10. These materials exhibit potential as adsorbents for capture/adsorption of CO2.</p>
1 aBirje, Amit, R.1 aYadav, Tushar, R.1 aNandanwar, Sachin, U.  uhttps://library.ncl.res.in/content/cation-exchanged-al-substituted-etas-10-adsorption-co2-and-n2