Enhanced one-pot selective conversion of cellulose to ethylene glycol over NaZSM-5 supported metal catalysts

Abstract

The mesopores/micropores NaZSM-5 was synthesised by sol–gel method. The 5%Al–8%Ni–25%W/NaZSM-5 catalyst exhibited the highest cellulose conversion of 100% with EG yield as high as 89% (C mol%) at moderate reaction conditions which is highly applicable in polymer Industry.

Investigation of the Effect of Zeolite Supports and the Role of W‐Species for One‐Pot Catalytic Conversion of Cellulose to Ethylene Glycol: Theoretical & Experimental Studies.

“…The prepared catalysts were thoroughly characterized by various physico‐chemical methods. The results are discussed in detailed in our previous work for NaZSM‐5 supported metal catalyst [37] . Herein, we briefly discuss the catalyst characterization over HY and NaY supported metal catalyst.…”

“…The catalyst 5%Al‐ 8%Ni‐20%W loaded on different supports say NaY, HY, NaZSM‐5 and 5%Al‐ 8%Ni‐25%W HZSM‐5 yielded 50.1%, 62.8%, 69.5% and 67.7% of EG respectively at 220 °C, 70 bar H 2 pressure for 6 h reaction time for one‐pot cellulose conversion. Thus NaZSM‐5 was chosen to be the best support for further optimization studies and the results are reported in our previous publication [37] . It is understandable that the product selectivity and distributions are influence by the nature of the support.…”

“… The proposed reaction pathway for (Al)−Ni−W/zeolites catalyst for the one‐pot catalytic conversion of cellulose [37] . (Reproduced from Ref [37] with the permission of Royal Society of Chemistry).…”

“…For the known products, the calibration curve was plotted. The conversion of cellulose was calculated using the following formula, with error of ±3%: [37] $$$\vcenter{\openup.5em\halign{$\displaystyle{#}$\cr Conversion\ \left(\char37 \right)={{{W}_{1}-{W}_{2}}\over{{W}_{1}}}\ \times 100\hfill\cr}}$$$ …”

Catalytic conversion of sucrose to 1,2-propanediol over alumina-supported Ni–Mo bimetallic catalysts

“…[1][2][3][4][5] Recently, our group reported the selective production of ethylene glycol (EG), one of the most in-demand energy chemicals, from cellulose and glucose. 6,7 Like EG, 1,2-propanediol (1,2-PDO) is a glycol with a wide range of applications. Although used as an additive in cosmetics, nutritional products, medicines, and dyes, it is being increasingly used in anti-freeze and de-icing uids as well as a component of unsaturated polyester resins, liquid non-ionic detergents, and coolants.…”