Ultra‐deep catalytic adsorptive desulfurization of diesel fuel using Ti‐silica gel adsorbent at low Ti‐loading

Dai, Xiong; Peng, Chong; Yang, Cuiting; Li, Guoqing; Chen, Shibin; Miao, Guang; Xiao, Jing

doi:10.1002/aic.17493

Cited by 16 publications

(5 citation statements)

References 62 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The adsorption selectivity was calculated on the basis of static adsorption experiments, 33 as shown in Figure 3. As expected, UMC‐xyl exhibited pronounced adsorption selectivity of 53 for p X/ m X and 180 for p X/ o X.…”

Section: Resultsmentioning

confidence: 99%

Liquid‐phase selective adsorption of xylene isomers in ultramicroporous carbon spheres

Chen,

Yang,

Zhou

et al. 2023

AIChE Journal

Self Cite

View full text Add to dashboard Cite

The objective of this work is to investigate adsorption separation of liquid‐phase xylene isomers using ultramicroporous carbon spheres. The synthesized glucose‐based adsorbent (UMC‐xyl) enabled the challenging separation of liquid‐phase p‐xylene/m‐xylene with an adsorption selectivity of 53 as well as p‐xylene uptake of 91mg/g, outperforming a series of commercial adsorbents including the industrial benchmark KBaX. The micropore diffusion model was used to give the best fit to the adsorption kinetics of UMC‐xyl with a rate achieved higher than KBaX. The xylene isomer separation was facilitated by the narrow ultramicropore size distributed at 5.8–6.8 Å in UMC‐xyl via a synergistic kinetic and size‐sieving separation mechanism. Breakthrough experiments confirmed the effectiveness of UMC‐xyl in the dynamic selective separation of p‐xylene from xylene isomers, together with superior multiple‐cycle eluent regenerability under the synergistic effects of the “like‐dissolve‐like” principle and π–π interaction. The work opens a new direction of using porous carbon adsorbents for continuous liquid‐phase separation of challenging hydrocarbon isomers.

show abstract

Section: Resultsmentioning

confidence: 99%

Liquid‐phase selective adsorption of xylene isomers in ultramicroporous carbon spheres

Chen,

Yang,

Zhou

et al. 2023

AIChE Journal

Self Cite

View full text Add to dashboard Cite

show abstract

“…Nonhydrodesulfurization technologies mainly include extractive desulfurization (EDS), , oxidative desulfurization, , adsorptive desulfurization, , biological desulfurization, and alkylation desulfurization . Among them, EDS has mild operating conditions and low energy consumption and does not require the use of catalysts and hydrogen.…”

Section: Introductionmentioning

confidence: 99%

Ionic Liquids as Extraction Desulfurizers and Corrosion Inhibitors: Experimental and Theoretical Studies

Cui,

Zhan,

Laiwang

et al. 2024

ACS Sustainable Chem. Eng.

View full text Add to dashboard Cite

Ionic liquids (ILs) have received widespread attention in the field of green desulfurization in the past few years due to their excellent desulfurization ability and infinite potential for designability. However, the additional costs and environmental issues faced when dealing with ILs with degraded desulfurization performance have limited their practical applications. To solve the reuse problem of degraded ILs, this study analyzed the feasibility of using ILs as extraction desulfurizers and corrosion inhibitors in refineries using methods such as liquid chromatography, electrochemical impedance spectroscopy, quantum chemistry, and molecular dynamics simulation. The results indicated that 1-hydroxyethyl-3-hexylimidazolium bromide gave a great thiophene desulfurization efficiency of 50.82% and an excellent corrosion inhibition efficiency of 98.29%. After undertaking desulfurization tasks, the IL could continue to act as an interface-type inhibitor to adsorb on the Q235 surfaces, hindering aqueous electrolyte attack and thus inhibiting the corrosion rate of refining equipment. Its adsorption obeyed the Langmuir isotherm. Improving the electron donating ability, side chain interaction, imidazolium ring, and thiophene interaction, as well as the adsorption of thiophene S atoms on long side chains of IL cations, while suppressing the interaction between the imidazolium ring and n-heptane and the adsorption of n-heptane on the long side chains, could further increase the corrosion inhibition and desulfurization performance of ILs. Using ILs as extraction desulfurizers and corrosion inhibitors is expected to solve environmental and safety issues in the refining process and reduce the adverse effects of high prices on the practical application of ILs.

show abstract

“…In the coming decades, the worldwide demand for diesel fuel will remain heavy although significant efforts have been made in renewable energy. , Diesel fuel still continues to serve as a major irreplaceable energy resource in transportation, machinery, and engineering . However, SO x will be generated by fuels containing sulfur compounds after combustion, which seriously threatens human health and the environment. − For this reason, almost all countries and regions have established stricter standards on the sulfur content of fuels. ,− In view of increasingly stringent environmental protection laws, it is extremely necessary to achieve ultra-deep desulfurization of fuels. − Conventionally, the hydrodesulfurization (HDS) process widely used in industry at this stage has certain limitations, such as high temperature and high-pressure reaction conditions in the HDS process, and it is difficult for HDS to completely remove thiophenic compounds (THs), − such as dibenzothiophene (DBT), 4-methyldibenzothiophene (4-MDBT), and 4,6-dimethyldibenzothiophene (4,6-DMDBT). Therefore, it is desirable to find an alternative process of nonhydrodesulfurization to complement HDS.…”

Section: Introductionmentioning

confidence: 99%

Group IIIA Single-Metal Atoms Anchored on Hexagonal Boron Nitride for Selective Adsorption Desulfurization via S–M Bonds

et al. 2023

View full text Add to dashboard Cite

Single-atom adsorbents (SAAs) featuring maximized atom utilization and uniform isolated adsorption sites have aroused extensive research interest in recent years as a novel class of adsorption materials research. Nevertheless, it is still challenging to gain a fundamental understanding of the complicated behaviors of SAAs for adsorbing thiophenic compounds (THs). Herein, this work systematically investigated the mechanisms of adsorption desulfurization (ADS) over a single group IIIA metal atom (Ga, In, and Tl) anchored on hexagonal boron nitride nanosheets (BNNSs) via density functional theory (DFT) calculations. First, all the possible doping sites have been considered and their stabilities have been evaluated by the doped energy. DFT calculations reveal that metal atoms prefer to substitute B atoms on BNNSs rather than N atoms. Additionally, SAAs all exhibit considerably enhanced adsorption capacity for THs primarily by the sulfur-metal (S–M) bond with π–π interactions maintained. Among them, In-atom-based SAAs would be adequate to provide the highest adsorption energy (In_cen_B, −40.1 kcal mol–1). Furthermore, from the perspective of adsorption energy, the SAAs show superior selectivity to THs than aromatic compounds due to the newly formed S–M bond. We hope that our work will manifest the design and application of SAAs in the field of ADS and shed light on a new strategy for fabricating SAAs based on BNNSs.

show abstract

Ultra‐deep catalytic adsorptive desulfurization of diesel fuel using Ti‐silica gel adsorbent at low Ti‐loading

Cited by 16 publications

References 62 publications

Liquid‐phase selective adsorption of xylene isomers in ultramicroporous carbon spheres

Liquid‐phase selective adsorption of xylene isomers in ultramicroporous carbon spheres

Ionic Liquids as Extraction Desulfurizers and Corrosion Inhibitors: Experimental and Theoretical Studies

Group IIIA Single-Metal Atoms Anchored on Hexagonal Boron Nitride for Selective Adsorption Desulfurization via S–M Bonds

Contact Info

Product

Resources

About