Higher Acetone Conversion Obtained Over a TiO2–Pd Bifunctional Catalyst for Liquid-Phase Synthesis of Methyl Isobutyl Ketone: The Role of Al2O3 Support

Zhu, Qianling; Duan, Hui; Lin, Baining; Zhu, Yifan; Hu, Yingjie; Zhou, Yonghua

doi:10.1007/s10562-019-02861-0

Cited by 15 publications

(2 citation statements)

References 35 publications

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“…Note that the dominant Al 2 p peak of the polished reference surface exhibits a pronounced shoulder toward higher binding energies (marked by a vertical dashed line) that may arise from aluminum–titanium–oxides (e.g., Al–O–Ti). [ 36 ] That shoulder widely vanishes with the number of over‐scans OS, indicating that the thickness of the laser‐induced oxide layer is increased, while the superficial aluminum‐titanium‐oxides turn into the thermodynamically most stable form Al 2 O 3 . This behavior clearly points toward the laser‐induced oxidation of the Al compound at Ti–6Al–4V surfaces during the HSFL formation.…”

Section: Resultsmentioning

confidence: 99%

Chemical and Topographical Changes upon Sub‐100‐nm Laser‐Induced Periodic Surface Structure Formation on Titanium Alloy: The Influence of Laser Pulse Repetition Rate and Number of Over‐Scans

Müller,

Mirabella,

Knigge

et al. 2023

Physica Status Solidi (a)

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Titanium and its alloys are known to allow the straightforward laser‐based manufacturing of ordered surface nanostructures, so‐called high spatial frequency laser‐induced periodic surface structures (HSFL). These structures exhibit sub‐100 nm spatial periods – far below the optical diffraction limit. However, the resulting surface functionalities are usually enabled by both, topographic and chemical alterations of the nanostructured surfaces. For exploring these effects, multi‐method characterizations were performed here for HSFL processed on Ti‐6Al‐4V alloy upon irradiation with near‐infrared ps‐laser pulses (1030 nm, ∽1 ps pulse duration, 1–400 kHz) under different laser scan processing conditions, i.e., by systematically varying the pulse repetition frequency and the number of laser irradiation passes. The sample characterization involved morphological and topographical investigations by scanning electron microscopy, atomic force microscopy, tactile stylus profilometry, as well as near‐surface chemical analyses hard X‐ray photoelectron spectroscopy and depth‐profiling time‐of‐flight secondary ion mass spectrometry. This provides a quantification of the laser ablation depth, the geometrical HSFL characteristics and enables new detailed insights into the depth extent and the nature of the non‐ablative laser‐induced near‐surface oxidation accompanying these nanostructures. This allows to answer the questions how the processing of HSFL can be industrially scaled up, and whether the latter is limited by heat‐accumulation effects.This article is protected by copyright. All rights reserved.

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Section: Resultsmentioning

confidence: 99%

Chemical and Topographical Changes upon Sub‐100‐nm Laser‐Induced Periodic Surface Structure Formation on Titanium Alloy: The Influence of Laser Pulse Repetition Rate and Number of Over‐Scans

Müller,

Mirabella,

Knigge

et al. 2023

Physica Status Solidi (a)

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“…SnO2 can be used as a strong Lewis acid carrier (Heda et al 2019). The Al2O3 could also play a similar role (Zhu et al 2019). In addition, because the valences of Sn and Al are different, their combination could also generate many active sites and improve the property (Li et al 1994;Kurmach et al 2019).…”

Section: Introductionmentioning

confidence: 99%

Efficient lignin depolymerization with Ru- and W- modified bi-functional solid acid catalyst

Wang

Zhou

et al. 2021

BioRes

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A novel Ru-modified composite catalyst, Ru-W/Sn-AlOx, was prepared, and the effects of the catalyst on lignin depolymerization were investigated in this study. The catalyst converted approximately 95% lignin into liquid product at 300 °C in 12 h and 2/3 of the liquid product could be soluble in petroleum ether. The petroleum ether (PE) soluble product was mainly composed of monomers, dimers and some trimmers. This indeed indicated that the catalyst could effectively depolymerize lignin into small-molecule products. 7.22% of monomers was obtained at 310 C for 12 h. Meanwhile, the catalyst effectively reduced the char formation to 2%. After the catalytic depolymerization, the higher heating value (HHV) of the liquid product increased from 25.7 to 32.4 MJ/kg. The product could be utilized as fuel additive or converted to biofuels. This catalysis system showed great potential in the conversion of lignin into biofuels.

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Novel Pd/Al2O3–CeO2 Nanosheets for One-Pot Synthesis of Methyl Isobutyl Ketone from Acetone

Zhang

Gong

et al. 2022

Catal Lett

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Higher Acetone Conversion Obtained Over a TiO2–Pd Bifunctional Catalyst for Liquid-Phase Synthesis of Methyl Isobutyl Ketone: The Role of Al2O3 Support

Cited by 15 publications

References 35 publications

Chemical and Topographical Changes upon Sub‐100‐nm Laser‐Induced Periodic Surface Structure Formation on Titanium Alloy: The Influence of Laser Pulse Repetition Rate and Number of Over‐Scans

Chemical and Topographical Changes upon Sub‐100‐nm Laser‐Induced Periodic Surface Structure Formation on Titanium Alloy: The Influence of Laser Pulse Repetition Rate and Number of Over‐Scans

Efficient lignin depolymerization with Ru- and W- modified bi-functional solid acid catalyst

Novel Pd/Al2O3–CeO2 Nanosheets for One-Pot Synthesis of Methyl Isobutyl Ketone from Acetone

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