Cumene hydroperoxide hydrogenation over Pd/C catalysts

Zhu, Qing-cai; Shen, Benxian; Ling, Hao; Gu, Ruixia

doi:10.1016/j.jhazmat.2009.10.057

Cited by 22 publications

(14 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Note that the oxygenated functional groups on the surface of active carbon mainly play a key role for the palladium dispersed. 29,30 It is proposed that oxygenates functional groups, such as carboxyl and hydroxyl groups, have been increased 31 Moreover, two wide diffraction peaks have been detected at 2q ¼ 22.6 and 2q ¼ 26.5 which can be ascribed to the amorphous structure of activated carbon. 28 The FT-IR spectra of modied activated carbon with different treatment methods are shown in Fig.…”

Section: Functional Groups Of the Modied Active Carbonmentioning

confidence: 99%

Hydrogenation in supercritical conditions catalyzed by palladium supported on modified activated carbon

et al. 2015

View full text Add to dashboard Cite

Biomass is expected to be a substitute for traditional fossil fuels because it is renewable and environmentally friendly. Bio-oil, as an important utilization of biomass, has a complex composition. Accordingly, it remains a great challenge for oxygenated compounds in bio-oil to be upgraded, especially for furfural. In this research, a highly active catalyst with 1 wt% palladium supported on activated carbon (Pd/AC) was prepared by impregnating Pd species on modified activated carbon, which was applied to furfural catalytic hydrogenation in super critical carbon dioxide (scCO 2 ). The conversion rate (79%) was higher than that obtained in toluene as solvent (60%). A selectivity of furfuralcohol and tetrahydrofurfuryl alcohol of up to 100% was achieved in scCO 2 conditions with no byproducts obtained. In contrast, the total selectivity was only 60% using ethanol as solvent. Meanwhile, the reaction conditions in the scCO 2 including hydrogen pressure and catalyst amount have been investigated. The Pd/AC catalysts were characterized by XRD, SEM, IR and BET techniques. A green solvent, and high activity and selectivity present real advantages of this method over other methods.

show abstract

Section: Functional Groups Of the Modied Active Carbonmentioning

confidence: 99%

Hydrogenation in supercritical conditions catalyzed by palladium supported on modified activated carbon

et al. 2015

View full text Add to dashboard Cite

show abstract

“…The clean allylic alcohols were obtained after acidification, filtration and removal of the solvent in 70 % yield. Hydroperoxides undergo hydrogenation with H 2 over Pd/C [39–41] . Consistently, the saturated alkanols were isolated from the crude photo‐oxygenation mixture in 75 % yield after hydrogenation at 10 bar H 2 and 20 °C (Scheme 3b).…”

Section: Resultsmentioning

confidence: 63%

“…Hydroperoxides undergo hydrogenation with H 2 over Pd/C. [ 39 , 40 , 41 ] Consistently, the saturated alkanols were isolated from the crude photo‐oxygenation mixture in 75 % yield after hydrogenation at 10 bar H 2 and 20 °C (Scheme 3 b).…”

Section: Resultsmentioning

confidence: 83%

Light‐Driven Waste‐To‐Value Upcycling: Bio‐Based Polyols and Polyurethanes from the Photo‐Oxygenation of Cardanols

Stuhr

Bayer²,

Stark

et al. 2021

ChemSusChem

View full text Add to dashboard Cite

The upcycling of waste biomass into valuable materials by resource‐efficient chemical transformations is a prime objective for sustainable chemistry. This approach is demonstrated in a straightforward light‐driven synthesis of polyols and polyurethane foams from the multi‐ton waste products of cashew nut processing. The photo‐oxygenation of cardanol from nutshell oil results in the formation of synthetically versatile hydroperoxides. The choice of the workup method (i. e., reduction, hydrogenation, epoxidation) enables access to a diverse range of alcohols with tunable alkene and OH functions. Condensation with isocyanates to give rigid polyurethane foams provides a resource‐efficient waste‐to‐value chain that benefits from the availability of cardanol and installation of OH groups from aerial O2.

show abstract

“…Wastewater containing toxic substances from industrial plant is one of the major environmental problems which have increasingly attracted global attention. Cumene hydroperoxide (CHP), an initial substance of phenol production, was not completely reacted and finally contaminated the wastewater from phenol plant . CHP is a toxic substance for ecosystem because it can reduce the lichen's antioxidant resources .…”

Section: Introductionmentioning

confidence: 99%

“…Cumene hydroperoxide (CHP), an initial substance of phenol production, was not completely reacted and finally contaminated the wastewater from phenol plant. 1,2 CHP is a toxic substance for ecosystem because it can reduce the lichen's antioxidant resources. 3 TiO 2 photocatalyst has been extensive research topics for resolving hazardous wastewaters because they offer many advantages, ie high photocatalytic activity, chemical stability, nontoxicity, low cost, and achievement of complete mineralization without generation of toxic byproducts.…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic activity of TiO₂ coated porous silica beads on degradation of cumene hydroperoxide

Pinato

Suttiponparnit

Panpa

et al. 2018

Int J Applied Ceramic Tech

View full text Add to dashboard Cite

Recently, due to an increasing global concern on environmental safety, titanium dioxide (TiO2) photocatalyst has been extensively researched for use as air and water pollution treatments. This study was initiative for producing an economically viable TiO2 photocatalyst material with recyclability for degradation of CHP contaminated wastewater. TiO2 P‐25, a well‐known photocatalyst, with a proper amount (15% w/w of CAC) was coated on porous silica beads (ECOLITE®) by granulation technique, using high calcium aluminate cement (CAC) as a binder (EC+CAC+15% w/w TiO2 P‐25). The experiments revealed that high concentration CHP solutions were completely degraded by EC+CAC+15% w/w TiO2 P‐25 within 5 and 7 hours. The recyclability of EC+CAC+15% w/w TiO2 P‐25 was evaluated by investigation the degradation activity of freshly prepared CHP solution under UV light irradiation using the repetitive photocatalyst beads for 6 runs. HPLC analyses indicated that the CHP degradation was completed in the 1st run and down to over 90% in the 6th run. Hence, EC+CAC+15% w/w TiO2 P‐25 showed a long durability and good recyclability for CHP degradation, resulted from the good adherence of hydration product layer of CAC for TiO2 particles as well as its large surface area that offered good adsorption for CHP.

show abstract

Cumene hydroperoxide hydrogenation over Pd/C catalysts

Cited by 22 publications

References 17 publications

Hydrogenation in supercritical conditions catalyzed by palladium supported on modified activated carbon

Hydrogenation in supercritical conditions catalyzed by palladium supported on modified activated carbon

Light‐Driven Waste‐To‐Value Upcycling: Bio‐Based Polyols and Polyurethanes from the Photo‐Oxygenation of Cardanols

Photocatalytic activity of TiO₂ coated porous silica beads on degradation of cumene hydroperoxide

Contact Info

Product

Resources

About

Cumene hydroperoxide hydrogenation over Pd/C catalysts

Cited by 22 publications

References 17 publications

Hydrogenation in supercritical conditions catalyzed by palladium supported on modified activated carbon

Hydrogenation in supercritical conditions catalyzed by palladium supported on modified activated carbon

Light‐Driven Waste‐To‐Value Upcycling: Bio‐Based Polyols and Polyurethanes from the Photo‐Oxygenation of Cardanols

Photocatalytic activity of TiO2 coated porous silica beads on degradation of cumene hydroperoxide

Contact Info

Product

Resources

About

Photocatalytic activity of TiO₂ coated porous silica beads on degradation of cumene hydroperoxide