Recovery process for phenolic compounds from coal-derived oils by ions of soluble metal salts

Ge, Yizhang; Jin, Huixin

doi:10.1016/0016-2361(95)00276-6

Cited by 16 publications

(3 citation statements)

References 4 publications

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“…By this process, two products (phenol and acetone) are obtained simultaneously from one reactant (cumene). Cumene hydroperoxide is formed from the oxidation of cumene, and subsequently, phenol and acetone are produced from the decomposition of the peroxide via a catalyst of concentrated mineral acid (Ge and Jin 1996;Schmidt 2005;Zakoshansky 2007;Pilato 2010).…”

Section: Introductionmentioning

confidence: 99%

Characterization and adhesive performance of phenol-formaldehyde resol resin reinforced with carbon nanotubes

Ciritcioğlu

Özbay

2022

BioRes

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Chemical, physical, thermal properties and bonding quality of phenol-formaldehyde resol resin (PF) synthesized with single-walled carbon nanotubes (SWCNTs) was evaluated at varying ratios from 1 wt% to 5 wt%. The effect of the SWCNTs addition on thermal and chemical properties of the PF resins was characterized by thermal gravimetric analysis (TGA) and Fourier transform infrared (FT-IR) spectroscopy, respectively. FT-IR analysis revealed that the peaks of the modified PF resol resins were similar to those of the reference (laboratory-produced) PF resol resin. These similarities indicated that the synthesis of the resins with phenol, formaldehyde, and carbon nano tubes was successful. The PF resins modified using SWCNTs demonstrated higher thermal stability than the reference PF resin. It was found that the bonding strength of the PF resin containing 3 wt% SWCNTs could reach 12.45 N/mm2 in dry conditions and 7.57 N/mm2 in wet conditions. The bonding test results demonstrated that the SWCNTs were able to improve the bonding performance of the resin under dry and/or wet conditions. This work presents an effective method to improve PF resins with SWCNTs reinforcement for use in the wood and/or polymer composite industries.

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Section: Introductionmentioning

confidence: 99%

Characterization and adhesive performance of phenol-formaldehyde resol resin reinforced with carbon nanotubes

Ciritcioğlu

Özbay

2022

BioRes

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“…Thus, alternative methods that avoid the use of strong alkali and acid solutions have been studied. Metal ions (Ca 2+ and Ba 2+ ), , organic solvents (methanol, glycerol, and ethylene glycol), − complexing agents (urea and hexamethylenetetramine), , supercritical fluids, and functionalized metal–organic frameworks have all been used for phenol separation. These methods have their own advantages, such as simple operation, low cost, and no pollution.…”

Section: Introductionmentioning

confidence: 99%

High-Performance Separation of Phenolic Compounds from Coal-Based Liquid Oil by Deep Eutectic Solvents

Feng

Nimmo

et al. 2019

ACS Sustainable Chem. Eng.

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The separation of phenolic compounds from coal-based liquid oil is of economic value and practical significance. Conventional separation techniques for phenolic compounds always produce a large amount of wastewater. Herein, deep eutectic solvents (DESs) are considered as effective alternatives to traditional solvents. To complete the separation of phenolic compounds from coal-based liquid oil, DESs should have stronger interactions with phenols than the oil and form new DES-phenol aggregates, breaking the original molecular aggregates in the oil. Initially, density fuunctional theorycalculations were used to explore and prove the feasibility of phenolic compound separation by a choline chloride (ChCl)-glycerol DES from the perspective of interaction type and intensity, and the calculation results were verified by spectral experiments. Then, based on the phenol removal efficiency and neutral oil entrainment, the influences of the mole ratio of glycerol to ChCl, separation temperature, and DES dose were investigated and followed by discussions on the reuse of DES and a comparison of its separation capacity with that of a reported separation agent. Finally, this DES was applied to separate phenolic compounds from real coal-based liquid oil. The results show that H-bonds between the DES and phenolic compounds are the main driving force of this separation process. Under optimal conditions, the ChCl-glycerol (1:1) DES can extract 98.3% of the phenolic compounds with only 4.2% entrained neutral oil, and the selectivity is better than that of ChCl alone. Additionally, satisfactory results were obtained in the separation of phenolic compounds from real coal liquefaction oil and real coal tar, providing a universal method for the separation of phenolic compounds from coal-based liquid oil.

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“…Separation of phenol from industrial waste stream has gathered significant interest over past few decades (Krishnakumar and Sharma 1984). Some important methods regarding recovery of phenols include solvent extraction (Ge and Jin 1996), activated carbon and polymer adsorption (Cook et al 1975;Bercie et al 1996), and membrane processes (Uramoto et al 1991;Ray et al 1997). Membranes with high affinity towards phenol permeability (phenol permselective) such as polyether-block-polyamide (Boddeker et al 1990), modified polydimethylsiloxane (PDMS) (Wu et al 2000) and polyurethane (Hoshi et al 1997) were introduced for improved phenol separation.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and performance of a novel polyurethaneurea as pervaporation membrane for the selective removal of phenol from industrial waste water

2002

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Hydroxyterminated polybutadiene (HTPB) was reacted with 2,4-toluene diisocyanate (TDI) followed by the addition of a diamine chain extender (prepared by the condensation reaction of 4,4′ ′diaminodiphenylsulfone and terepthalaldehyde) to prepare an imine containing polyurethaneurea (PIUU). The prepared polyurethaneurea was caste in order to obtain polymer film. The new polyurethaneurea film showed high phenol selectivity as pervaporation membrane. About 88% phenol was obtained in condensed permeate when pervaporation was performed at 50°C with 7% aqueous phenol solution as feed and permeate side pressure was maintained at 5 mm of Hg.

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Recovery process for phenolic compounds from coal-derived oils by ions of soluble metal salts

Cited by 16 publications

References 4 publications

Characterization and adhesive performance of phenol-formaldehyde resol resin reinforced with carbon nanotubes

Characterization and adhesive performance of phenol-formaldehyde resol resin reinforced with carbon nanotubes

High-Performance Separation of Phenolic Compounds from Coal-Based Liquid Oil by Deep Eutectic Solvents

Synthesis and performance of a novel polyurethaneurea as pervaporation membrane for the selective removal of phenol from industrial waste water

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