A Comparative Study of Mn/Co Binary Metal Catalysts Supported on Two Commercial Diatomaceous Earths for Oxidation of Benzene

Tomatis, Marco; Xu, Hui; Wei, Chaohui; Bishop, Matthew; He, Jun; Wang, Chengjun; Zhao, Ming; Xiao, Hang; Yu, Huan; Behera, S. N.; Tang, Bencan

doi:10.3390/catal8030111

Cited by 6 publications

(4 citation statements)

References 61 publications

(65 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The observed temperature for 100% complete benzene oxidation over Pt FANaX is higher than this of Pt/Al 2 O 3 catalysts [51], and it is compatible with this of Au and Pd catalysts loaded on iron modified cerium oxides [52,53] and Mn/Co binary catalysts [54] and cobalt-cerium oxides [55]. The advantages are the utilization of fly ash from one side and a cheap source for the preparation of zeolite support from the other side.…”

Section: Resultssupporting

confidence: 65%

Benzene Oxidation over Pt Loaded on Fly Ash Zeolite X

et al. 2023

View full text Add to dashboard Cite

In the present study, zeolite X (FANaX) was synthesized from coal fly ash (FA) by a two-step high-temperature method. In order to follow the effect of different contaminants in the starting coal ash, zeolite X was also synthesized from pure chemicals according to a classical recipe (NaX). Iron was loaded on this reference zeolite with the amount which was contained in the coal FA. The final catalytic samples were obtained by wet impregnation of Pt nanoparticles on both types of zeolite crystals. The most active samples in the benzene oxidation were the platinum-modified ones and, among them, the Pt-impregnated FA zeolite (Pt FANaX). The comparison of the catalytic activity of Pt FANaX with the reference PtFe NaX zeolite showed a temperature difference of 10 °C in favor of Pt FANaX at 50% benzene conversion. From these results, it can be concluded that FA zeolites are a good, cheaper and environmentally friendly alternative to traditional zeolites, synthesized from pure chemicals, which can be applied in the preparation of catalysts for the purification of gaseous mixtures from harmful organic compounds.

show abstract

Section: Resultssupporting

confidence: 65%

Benzene Oxidation over Pt Loaded on Fly Ash Zeolite X

et al. 2023

View full text Add to dashboard Cite

show abstract

“…This mineral crystallizes in the form of regular octagonal crystals. Due to its properties, it is used for the treatment of fireproof fabrics as well as for clarifying cloudy water [ 56 , 57 , 58 , 59 ]. Alum is used in the synthesis of synthetic ethyl alcohol, but scientific literature lacks a large amount of information on the catalytic use of alum.…”

Section: Introductionmentioning

confidence: 99%

Conversion of Geraniol into Useful Value-Added Products in the Presence of Catalysts of Natural Origin: Diatomite and Alum

et al. 2022

View full text Add to dashboard Cite

This article presents research related to the transformation of geraniol (GA), leading to the formation of products with very valuable properties. In the planned method, heterogeneous catalysts of natural origin in the form of alum and diatomite were used as catalysts. Initially, the process which we investigated was the process of isomerization of GA, but it turned out during the studies that GA is also transformed in other reactions. Before catalytic tests, these two minerals were subjected to detailed instrumental analyses using the following methods: XRD, SEM/EDX, XRF and FTIR, which allowed to obtain their full morphological characteristics. During the catalytic tests, the influence of such relevant parameters on the GA transformations was determined: temperature from 80 to 150 °C, catalyst content from 5 to 15% by weight and the reaction time from 15 min to 24 h. The tests presented in the article were carried out under atmospheric pressure (in air) as well as without the use of a solvent. The optimal conditions for the transformations of GA were determined on the basis of its conversion and selectivities of transformation to the main products in the form of: beta-pinene (BP), 6,11-dimethyl-2,6,10-dodecatriene-1-ol (DC) and thumbergol (TH). The above products were formed with the highest selectivity, respectively: 100 mol%, 50 mol% and 52 mol%. The results of the syntheses showed that for GA the best transformation results were obtained at the temperature of 80 °C (for both tested catalysts), with the catalyst content of 1 wt % (for both tested catalysts) and for the reaction time of 1 h (for diatomite)) and 3 h (for alum).

show abstract

“…3,24−26 Actually, diatomite is mainly composed of bio-SiO 2 , is abundant, and is very cheap. 27,28 In addition, as a natural material, it exhibits mesoporosity/macroporosity structure, strong acid resistance, good thermal stability, and low thermal conductivity, which make it very promising to directly use as an efficient support. 27,29,30 Hence, in this work, natural diatomite supported Pt NP catalysts were fabricated through using Cinnamomum camphora (CC) leaf extract as the reducing agent, which was further applied in the oxidation of benzene.…”

Section: Introductionmentioning

confidence: 99%

“…Besides, Zhang et al found that Pd NPs can be anchored well on natural diatomite and presented excellent activity for the Heck and Suzuki reaction. But there are nearly no reports about using diatomite supported metal NPs in the removal of VOCs, and the previous works were mainly concentrated on its role as adsorbent for VOC removal due to the hierarchically porous structure and higher adsorption capacity. ,− Actually, diatomite is mainly composed of bio-SiO 2 , is abundant, and is very cheap. , In addition, as a natural material, it exhibits mesoporosity/macroporosity structure, strong acid resistance, good thermal stability, and low thermal conductivity, which make it very promising to directly use as an efficient support. ,, …”

Section: Introductionmentioning

confidence: 99%

Diatomite Supported Pt Nanoparticles as Efficient Catalyst for Benzene Removal

Zhai

et al. 2019

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

Directly using natural materials as supporting material and reducing agent to obtain supported catalysts is significance along with the research of green and sustainable technologies. Herein, diatomite supported Pt (Pt/diatomite) catalysts were synthesized by the bioreduction method, through using Cinnamomum camphora (CC) leaf extract as reducing agent. As a result, the as-prepared 0.3% Pt/diatomite not only presented good benzene catalytic oxidation performance but also was catalytically stable and durable through long time on-stream, water vapor and carbon dioxide effect experiments. Through XPS, H2-TPR, H2-TPD, TEM, and in situ DRIFTS of CO adsorption analysis, it can be noticed that the high catalytic oxidation activity of 0.3% Pt/diatomite is attributed with more surface absorbed oxygen, good Pt dispersion and strong interactions between Pt and diatomite. Moreover, in situ DRIFTS of benzene oxidation experiments revealed that the hydrocarbon fragments were the intermediates during the process.

show abstract

A Comparative Study of Mn/Co Binary Metal Catalysts Supported on Two Commercial Diatomaceous Earths for Oxidation of Benzene

Cited by 6 publications

References 61 publications

Benzene Oxidation over Pt Loaded on Fly Ash Zeolite X

Benzene Oxidation over Pt Loaded on Fly Ash Zeolite X

Conversion of Geraniol into Useful Value-Added Products in the Presence of Catalysts of Natural Origin: Diatomite and Alum

Diatomite Supported Pt Nanoparticles as Efficient Catalyst for Benzene Removal

Contact Info

Product

Resources

About