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Amazing the crowd: A highly dispersive supported nickel catalyst is prepared by in situ decomposition of Ni(CO)4 over ZSM‐5 zeolite. The catalyst displays an amazing activity for complete hydrogenation of polymethylbenzenes which are extremely difficult to be saturated.

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Separation of phenols and ketones from bio-oil produced from ethanolysis of wheat stalk, Separation and Purification Technology (2015), doi: http://dx. ABSTRACTTo realize a high-efficient utilization of bio-oil, extraction-column chromatography was employed to separate bio-oil produced by ethanolysis of wheat stalk. Extraction was employed to separate bio-oil roughly by acid, alkaline solutions as well as organic solvents, and column chromatography was used to enrich chemicals with petroleum ether, or mixture of acetone/carbon disulfide as elution solvent. Bio-oil and all sub-fractions were determined by gas chromatography-mass spectrometry. C 8 -C 30 alkanes were enriched in petroleum elution sub-fractions, with a concentration of 97.6 %. Phenols were efficiently enriched in a high concentration ~100 % by elution of acetone/carbon disulfide. What's more, ketones were also separated efficiently 2 from bio-oil in this study. Acetophenone was enriched with a concentration of 71.2 % in a sub-fraction (ES b1 ) eluted by mixture of acetone/carbon disulfide. 2-hydroxy-cyclopentenones was enriched in a sub-fraction (ES d4 ) with a concentration of 52.6 %.

Baiyinhua lignite (BL) was sequentially extracted and thermally dissolved in isometric CS2/acetone and toluene/methanol binary solvents to obtain an extract in isometric CS2/acetone (EICA) and a soluble portion (SP) in isometric toluene/methanol (SPITM). The yields of EICA and SPITM are notably higher than the total extract yield from sequential extraction with CS2 and acetone (or acetone and CS2) and the total SP yield from sequential thermal dissolution in toluene and methanol (or methanol and toluene), indicating that there exists an obvious synergic effect between CS2 and acetone during the extraction and between toluene and methanol during the thermal dissolution. EICA and SPITM mainly consist of hydrocarbons and oxygen-containing organic species, respectively. Little difference in Fourier transform infrared spectroscopy spectra of BL and its extraction residue was observed, while the intensities of absorbances assigned to the phenolic OH, CO, and C–O/C–O–C groups of the thermal dissolution residue are obviously lower than those of BL and its extraction residue. X-ray photoelectron spectroscopy analysis shows that C–O/C–O–C groups in BL remarkably decreased after thermal dissolution, corresponding to the abundant phenols dissolved in SPITM. The difference in weight loss between BL and its extraction residue is close to the yield of EICA, while the difference in weight loss between extraction and thermal dissolution residues is significantly lower than the yield of SPITM.