Efficient formaldehyde oxidation over nickel hydroxide promoted Pt/γ-Al2O3 with a low Pt content

Yang, Tengfei; Huo, Ying; Liu, Yang; Rui, Zebao; Ji, Hongbing

doi:10.1016/j.apcatb.2016.07.041

Cited by 169 publications

(105 citation statements)

References 40 publications

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“…Bai et al 26 prepared 3D K-Ag/Co 3 O 4 catalyst and discovered that the addition of K + ions obviously promoted the catalytic performance for HCHO oxidation because of the surface OH À species provided by K + ions. Yang et al 48 reported that the superior performance of PtNi(OH) x /g-Al 2 O 3 could be attributed to the preferred hydroxyl-facilitated HCHO oxidation pathway through formate oxidation by the abundant associated hydroxyl groups near the Pt active sites. The Ag-based catalysts currently being applied for HCHO oxidation are summarized in Table 2.…”

Section: Catalytic Activitymentioning

confidence: 99%

Ag–K/MnO₂ nanorods as highly efficient catalysts for formaldehyde oxidation at low temperature

Wang

Zhu

et al. 2018

RSC Adv.

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Section: Catalytic Activitymentioning

confidence: 99%

Ag–K/MnO₂ nanorods as highly efficient catalysts for formaldehyde oxidation at low temperature

Wang

Zhu

et al. 2018

RSC Adv.

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“…Figure A and B show the spectra over 1Pd/SBA‐15 and 2Na‐1Pd/SBA‐15 exposed to the flow of HCHO+H 2 O+O 2 +N 2 gas mixture for 60 min at room temperature, respectively. The sharp peaks at 3740 and 1645 cm −1 and the broad band ranged from 3600 cm −1 to 3000 cm −1 belonged to adsorbed water . The peaks at 2960, 2920, and 2850 cm −1 were assigned to υ as (CH) and υ s (CH) of formate species.…”

Section: Resultsmentioning

confidence: 99%

Promoting Effect and Mechanism of Alkali Na on Pd/SBA‐15 for Room Temperature Formaldehyde Catalytic Oxidation

et al. 2019

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Room temperature HCHO catalytic oxidation over inert support loaded Pd catalysts remains a significant challenge. Herein, a series of alkali Na (1–4 wt.%) modified 1Pd/SBA‐15 catalysts were prepared by a co‐impregnation method and used for HCHO catalytic oxidation at room temperature. Results showed that alkali Na significantly improved the HCHO oxidation performance of 1Pd/SBA‐15 and the optimal Na loading was 2 wt.%. BET, XRD, STEM, XPS, H2‐TPR, O2‐TPD and in situ DRIFTS were performed to reveal the promotion role of alkali Na. As a consequence, alkali Na addition could stabilize well dispersed Pd particles which then facilitated the O2 activation and accelerated the decomposition of formate intermediates species, thus a superior HCHO catalytic oxidation performance was obtained. This study first clearly illustrated the promotion mechanism of alkali Na without the implication of active support and provides an efficient and facile way to achieve high dispersion of Pd particles on inert support and tremendously expands the selected range of supports for room temperature HCHO catalytic oxidation.

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“…Also, the literature survey shows that significant interest has been focused in the electrochemical oxidation of formaldehyde since many years . Some materials have been applied for the electro‐oxidation of CH 2 O including Pt electrode , Pt‐MnO 2 , Pt nanoparticles/GCE , Cu electrode , Pd electrode , Cu‐Pd thin film , Cu/Pd modified carbon nanotube paste electrode , Pt–Pd/CNT , nickel hydroxide‐promoted Pt/Al 2 O 3 , Au nanoparticles and zeolite‐modified electrodes containing nickel hydroxide , , . Nevertheless, some of these electrodes were found to suffer the problems of poor selectivity and low sensitivity produced by surface poisoning from the adsorbed intermediates .…”

Section: Introductionmentioning

confidence: 99%

Formaldehyde Electro‐catalytic Oxidation onto Carbon Paste Electrode Modified by MIL‐101(Cr) Nanoparticles

2020

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In this paper, MIL‐101(Cr) metal‐organic framework (MOF) has been rapidly synthesized via microwave heating and fully characterized using powder X‐ray diffraction (PXRD), field emission scanning electronic microscopy (FESEM), Fourier transform infrared (FT‐IR) and nitrogen adsorption/desorption isotherm. FESEM image of MIL‐101(Cr) MOF displays spherical particles with a uniform morphology and particle size under 100 nm. The BET surface area and average pore diameter of synthesized MIL‐101(Cr) MOF were obtained to be 7.266 × 102 m2 g−1 and 3.28 nm, respectively. Nickel hydroxide dispersed onto MIL‐101(Cr) nanoparticles modified carbon paste electrode (Ni(OH)2‐MIL/CPE) was employed for electro‐catalytic oxidation of formaldehyde (CH2O) in the alkaline medium. The mean value of electron‐transfer coefficient, charge‐transfer rate constant and surface coverage of the Ni(OH)2‐MIL/CPE are found to be 0.517, 0.0058 s−1 and 7.88 × 10−8 mol cm−2, respectively. Also, the mean value of catalytic rate constant and diffusion coefficient of CH2O in the modified electrode surface are calculated to be 2.37 × 102 cm3 mol−1 s−1 and 1.288 × 10−6 cm2 s−1, respectively. The results indicate that Ni(OH)2‐MIL/CPE displays good electrocatalytic activity to the CH2O oxidation owing to porous structure and the large surface area of MIL‐101(Cr) MOF.

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Efficient formaldehyde oxidation over nickel hydroxide promoted Pt/γ-Al2O3 with a low Pt content

Cited by 169 publications

References 40 publications

Ag–K/MnO₂ nanorods as highly efficient catalysts for formaldehyde oxidation at low temperature

Ag–K/MnO₂ nanorods as highly efficient catalysts for formaldehyde oxidation at low temperature

Promoting Effect and Mechanism of Alkali Na on Pd/SBA‐15 for Room Temperature Formaldehyde Catalytic Oxidation

Formaldehyde Electro‐catalytic Oxidation onto Carbon Paste Electrode Modified by MIL‐101(Cr) Nanoparticles

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Efficient formaldehyde oxidation over nickel hydroxide promoted Pt/γ-Al2O3 with a low Pt content

Cited by 169 publications

References 40 publications

Ag–K/MnO2 nanorods as highly efficient catalysts for formaldehyde oxidation at low temperature

Ag–K/MnO2 nanorods as highly efficient catalysts for formaldehyde oxidation at low temperature

Promoting Effect and Mechanism of Alkali Na on Pd/SBA‐15 for Room Temperature Formaldehyde Catalytic Oxidation

Formaldehyde Electro‐catalytic Oxidation onto Carbon Paste Electrode Modified by MIL‐101(Cr) Nanoparticles

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Ag–K/MnO₂ nanorods as highly efficient catalysts for formaldehyde oxidation at low temperature

Ag–K/MnO₂ nanorods as highly efficient catalysts for formaldehyde oxidation at low temperature