Reactive adsorption of low concentration methyl mercaptan on a Cu-based MOF with controllable size and shape

Ma, Xiang; Liu, Haidi; Li, Weiman; Peng, Shengpan; Chen, Yunfa

doi:10.1039/c6ra18593b

Cited by 38 publications

(8 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The strong interaction between the unsaturated copper sites and À SH groups of CH 3 SH is the cause of the observed color changes. [77] Fluorescent zinc-based metal-organic frameworks (Zn-MOFs) were produced by the solvothermal technique with a surface area of 5755 m 2 g À 1 . It was used for detecting hydrogen sulfide from natural gas.…”

Section: Gas Streamsmentioning

confidence: 99%

Metal Organic Frameworks: Desulfurization Process by Engineered Novel Adsorbents

et al. 2021

View full text Add to dashboard Cite

Removal of sulfur-containing compounds from liquid and gas steams originated from various processes of chemical industries would be essential, since these compounds can be the principal sources of deterioration and environmental degradation, and pollution even at low threshold concentration levels. The metal-organic frameworks (MOFs) compromise a wideranging of chemical structure designs with adjustable pore size and high promising surface area for the desulfurization process.In this review study, the current published studies and researches about sulfur removal in liquid and gas purification processes using MOFs as highly effective adsorbents and catalysts are systematically gathered and compared. According to the broad contextual information for sulfur removal using different MOFs in this study, it is called for new insight windows opened for the advance progresses in this area and the project of new and more effective MOF-based sorbents.

show abstract

Section: Gas Streamsmentioning

confidence: 99%

Metal Organic Frameworks: Desulfurization Process by Engineered Novel Adsorbents

et al. 2021

View full text Add to dashboard Cite

show abstract

“…The insignificant effect of 1‐hexene on Z‐sorb desulfurization capacity may imply to the different coordination modes of olefin and sulfur atoms to adsorbents. Olefins are reported adsorbed into the adsorbent through their π‐electrons, 40 while chemical adsorption by the formation of covalent bond between sulfur atom of mercaptan and metal is commonly reported responsible for the high selectivity for mercaptan capture 28,41,42 . The accurate mechanism for Z‐sorb immobilizing heptanethiol involving the reaction steps and the resulting adsorption form of mercaptan will be investigated in the following section.…”

Section: Resultsmentioning

confidence: 99%

“…Olefins are reported adsorbed into the adsorbent through their π-electrons, 40 while chemical adsorption by the formation of covalent bond between sulfur atom of mercaptan and metal is commonly reported responsible for the high selectivity for mercaptan capture. 28,41,42 The accurate mechanism for Z-sorb immobilizing heptanethiol involving the reaction steps and the resulting adsorption form of mercaptan will be investigated in the following section. In shape contrast, in terms of hetero-additives, the introduction of 4 wt% of MTBE dramatically decreased the adsorption capacity of heptanethiol from 21 to 12.4 mg-S/g-adsorbent (Figure S3), suggesting the strong inhibition from MTBE to heptanethiol adsorption, which likely attributed to the interaction between the polar ether groups and Zn sites on the adsorbent surface.…”

Section: High Selectivity Of Mercaptans In Model Fuelsmentioning

confidence: 99%

Ultra‐deep desulfurization of mercaptan by cyclic selective adsorption‐reactive regeneration at room temperature

et al. 2022

View full text Add to dashboard Cite

A cyclic process of selective adsorption-reactive regeneration over bifunctional Z-sorb was proposed for desulfurization of heavy mercaptan from gasoline under ambient conditions. A pronounced adsorption capacity (25.7 mg-S/g-adsorbent) and selectivity (206.1, ~10 times over 1-hexene) of heptanethiol over bifunctional Z-sorb were achieved, which can be attributed to the strong adsorbate-adsorbent interaction calculated as high as À44.6 kJ/mol. Catalytic reactive regeneration was proposed to remove stubbornly adsorbed heptanethiol, which achieved complete recovery of Z-sorb in multiple cycles under room temperature. With the aid of minor H 2 O 2 , the strongly adsorbed heptanethiol in the form of metal-thiolate (Zn-SR) transformed to readily desorbed disulfide, which was elucidated via the combined experiment and density functional theory calculations. The developed process provides insights to resolve the trade-off between adsorption selectivity and regenerability, paving the way for energy-efficient industrial adsorptive de-mercaptan of gasoline.

show abstract

“…Among these organic sulfides, light mercaptan (R-SH, R = C 1 –C 4 ) has become the focus of research. − To achieve the physical adsorption separation of R-SH/methane gas on the adsorbent surface, the interaction between R-SH molecules and the active sites should be weak, and physical desorption can be realized in the process of desorption. R-SH is easily oxidized on the surface of metal oxides due to the strong oxidizing lattice oxygen.…”

Section: Introductionmentioning

confidence: 99%

Adsorption and Separation of Ethyl Mercaptan from Methane Gas on HNb₃O₈ Nanosheets

Zhang

Wang

et al. 2021

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

Light mercaptan (R-SH, R = C 1 −C 4 ) is commonly found in various methane gases. These R-SH compounds are toxic, odorous, and corrosive. On the other hand, they are very important chemical raw materials. Hence, the physical separation of light mercaptan from methane has great economic and environmental benefits. In this paper, a stripping recombination method was adopted to prepare HNb 3 O 8 nanosheet (HNS) aggregation for the adsorption and separation of a mixed gas of ethyl mercaptan (Et-SH) from methane. The composition, morphology, structure, and acidity of the prepared samples were characterized in detail by powder X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM), laser Raman spectroscopy (LRS), 1 H magic-angle spinning nuclear magnetic resonance ( 1 H MAS NMR), and N 2 adsorption and desorption. The cyclic regeneration performance of HNS adsorption and separation of Et-SH from methane gas was studied. Through the analysis of the crystal structure and acidity of HNS, combining characterizations of the adsorbent before and after adsorption and regeneration, and the detection of the regenerated outlet gas, the types of adsorption mechanisms are obtained. Molecular-level adsorption mechanisms of Et-SH on HNS are proposed by density functional theory (DFT) calculations.

show abstract

Reactive adsorption of low concentration methyl mercaptan on a Cu-based MOF with controllable size and shape

Abstract: Low concentration CH3SH adsorption by MOF-199 with controllable size and shape.

Cited by 38 publications

References 47 publications

Metal Organic Frameworks: Desulfurization Process by Engineered Novel Adsorbents

Metal Organic Frameworks: Desulfurization Process by Engineered Novel Adsorbents

Ultra‐deep desulfurization of mercaptan by cyclic selective adsorption‐reactive regeneration at room temperature

Adsorption and Separation of Ethyl Mercaptan from Methane Gas on HNb₃O₈ Nanosheets

Contact Info

Product

Resources

About

Reactive adsorption of low concentration methyl mercaptan on a Cu-based MOF with controllable size and shape

Abstract: Low concentration CH3SH adsorption by MOF-199 with controllable size and shape.

Cited by 38 publications

References 47 publications

Metal Organic Frameworks: Desulfurization Process by Engineered Novel Adsorbents

Metal Organic Frameworks: Desulfurization Process by Engineered Novel Adsorbents

Ultra‐deep desulfurization of mercaptan by cyclic selective adsorption‐reactive regeneration at room temperature

Adsorption and Separation of Ethyl Mercaptan from Methane Gas on HNb3O8 Nanosheets

Contact Info

Product

Resources

About

Adsorption and Separation of Ethyl Mercaptan from Methane Gas on HNb₃O₈ Nanosheets