Ultrafine Ru species within confined space: An efficient adsorbent for ultra-deep desulfurization of benzene

An, Nihong; Wang, Hongqin; Zhang, Mengxu; Xie, Jiyang; Dai, Yunsheng; Yuan, Xiang‐Ai; Geng, Longlong

doi:10.1016/j.chemosphere.2020.127077

Cited by 10 publications

(3 citation statements)

References 41 publications

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“…[39], the resulted shaped samples present its feasibility because the size of the resulted pellet or granules could decrease the pressure drop resulted from the hydrodynamics, which could guarantee the access to the continuous flow process [40]. Among all these shaped subjects, the sphere-like γ-Al 2 O 3 pellets have verified its superiority attributed to the high surface area [41], strong mechanical solidity [42], and a defined diameter [32], which is frequently used in trickle bed reactors [40,43].…”

Section: Introductionmentioning

confidence: 97%

Efficient Sorbitol Producing Process through Glucose Hydrogenation Catalyzed by Ru Supported Amino Poly (Styrene-co-Maleic) Polymer (ASMA) Encapsulated on γ-Al2O3

et al. 2020

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In this work, a core-shell-like sphere ruthenium catalyst, named as 5%Ru/γ-Al2O3@ASMA, has been successfully synthesized through impregnating the ruthenium nanoparticles (NPs) on the surface of the amino poly (styrene-co-maleic) polymer (ASMA) encapsulating γ-Al2O3 pellet support. The interaction between the Ru cations and the electro-donating polymer shell rich in hydroxyl and amino groups through the coordination bond would guarantee that the Ru NPs can be highly dispersed and firmly embedded on the surface of the support. In addition, the solid sphere γ-Al2O3 pellet could serve as the core to support the resulted catalysts applied in the flow process in a trickle bed reactor to promote the productivity. The resulted catalyst 5%Ru/γ-Al2O3@ASMA can be applied efficiently in the glucose hydrogenation and presents a steadfast sorbitol yield of almost 90% both in batch reactor and the trickle bed reactor, indicating the potential feasibility of the core-shell-like catalyst in the efficient production of sorbitol.

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Section: Introductionmentioning

confidence: 97%

Efficient Sorbitol Producing Process through Glucose Hydrogenation Catalyzed by Ru Supported Amino Poly (Styrene-co-Maleic) Polymer (ASMA) Encapsulated on γ-Al2O3

et al. 2020

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“…[1][2][3][4][5][6][7] In the ultradeep adsorptive desulfurization of benzene, poor desulfurization results were reported because the interaction between the traditional adsorbents and organic sulfur species was inefficient even at low con centrations, and the adsorbent did not perform as anticipated. [8,9] Therefore, the industry has switched to using palladium alumina (Pd/Al 2 O 3 ) as an alter native adsorbent in the ultradeep adsorptive desulfurization of benzene because of its better performance. However, Pd/Al 2 O 3 has certain shortcomings, including the difficulty in the dissolution and adsorption of palladium chloride (PdCl 2 ) precursor and the complexity involved in the preparation of Pd/Al 2 O 3 .…”

Section: Introductionmentioning

confidence: 99%

A Novel Pd Precursor Loaded γ‐Al₂O₃ with Excellent Adsorbent Performance for Ultra‐Deep Adsorptive Desulfurization of Benzene

Xie

Dai

et al. 2023

Adv Funct Materials

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Fabricating highly water‐soluble and chlorine‐free precursors from Pd complexes remains challenging. Here, a novel Pd precursor (ammonium dinitrooxalato palladium(II) ((NH4)2[Pd(NO2)2(C2O4)]·2H2O)) is synthesized to address this challenge. Additionally, a Pd/Al2O3 adsorbent is prepared using γ‐Al2O3 as a base material to host Pd. The ligand action of the Pd complex forms single Pd atoms and Pd sub‐nano clusters on the surface of γ‐Al2O3. Pd/Al2O3‐4 as an adsorbent is evaluated using the benzene ultra‐deep desulfurization procedure, wherein thiophene is used as a probe molecule. The sulfur adsorption capacity of Pd/Al2O3‐4 is 1.76 mg g−1 for the ultra‐deep adsorptive desulfurization of benzene at a sulfur concentration of 50 ppm. The sulfur adsorption capacity of the new Pd/Al2O3‐4 adsorbent is 21.8% higher than that of a commercial Pd/Al2O3 adsorbent. In addition, the stability and durability of Pd/Al2O3‐4 are investigated at a sulfur concentration of 1 ppm. The Pd/Al2O3‐4 adsorbent achieves ≈100% thiophene removal after 434 h, which is 62 h more than the time required by the commercial Pd/Al2O3 adsorbent. The novel Pd precursor shows excellent potential for industrial applications, and the Pd/Al2O3‐4 adsorbent can be produced on a mass scale of 500 kg per batch.

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“…At present, the adsorbent for ultradeep desulfurization of benzene is palladium alumina (Pd/Al 2 O 3 ) adsorbent. With the increase in the price of palladium in recent years, the high loading of Pd and the high cost of Pd/Al 2 O 3 adsorbents have greatly restricted its wide application in the benzene refining process . Therefore, looking for an adsorbent with high adsorption capacity and relatively cheap substitutes to replace the Pd/Al 2 O 3 adsorbent is urgent research for benzene ultradeep desulfurization.…”

Section: Introductionmentioning

confidence: 99%

PtNi Bimetallic Nanoparticles on MgAlO Microflower Supports as Adsorbents for Desulfurization of Benzene

Xie

Jiang

Guo

2021

ACS Appl. Nano Mater.

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Palladium adsorbent is used in the ultradeep desulfurization process of benzene to prepare refined benzene, which is an important commercial chemical raw material in the petrochemical industry. However, with the increasing cost of palladium adsorbent, the wide application of palladium adsorbent in the benzene refining process is greatly limited. Here, we rationally designed PtNi/MgAlO adsorbent using the 3D nanomicroflower structure of MgAlO as the support and PtNi bimetallic nanoparticles as the active component. Various characterization techniques including BET, XRD, SEM, TEM, TPR, XPS, and N2-TPD were used to investigate the correlation between the adsorption performance and the microstructure of the adsorbent. The results show that the PtNi/MgAlO adsorbent exhibited an excellent adsorption sulfur capacity of 1.74 mg/g. Also, nearly 100% thiophene elimination was observed for 382 h, better than the commercial Pd/Al2O3 adsorbent. It shows great potential application in the ultradeep desulfurization of benzene.

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Ultrafine Ru species within confined space: An efficient adsorbent for ultra-deep desulfurization of benzene

Cited by 10 publications

References 41 publications

Efficient Sorbitol Producing Process through Glucose Hydrogenation Catalyzed by Ru Supported Amino Poly (Styrene-co-Maleic) Polymer (ASMA) Encapsulated on γ-Al2O3

Efficient Sorbitol Producing Process through Glucose Hydrogenation Catalyzed by Ru Supported Amino Poly (Styrene-co-Maleic) Polymer (ASMA) Encapsulated on γ-Al2O3

A Novel Pd Precursor Loaded γ‐Al₂O₃ with Excellent Adsorbent Performance for Ultra‐Deep Adsorptive Desulfurization of Benzene

PtNi Bimetallic Nanoparticles on MgAlO Microflower Supports as Adsorbents for Desulfurization of Benzene

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Ultrafine Ru species within confined space: An efficient adsorbent for ultra-deep desulfurization of benzene

Cited by 10 publications

References 41 publications

Efficient Sorbitol Producing Process through Glucose Hydrogenation Catalyzed by Ru Supported Amino Poly (Styrene-co-Maleic) Polymer (ASMA) Encapsulated on γ-Al2O3

Efficient Sorbitol Producing Process through Glucose Hydrogenation Catalyzed by Ru Supported Amino Poly (Styrene-co-Maleic) Polymer (ASMA) Encapsulated on γ-Al2O3

A Novel Pd Precursor Loaded γ‐Al2O3 with Excellent Adsorbent Performance for Ultra‐Deep Adsorptive Desulfurization of Benzene

PtNi Bimetallic Nanoparticles on MgAlO Microflower Supports as Adsorbents for Desulfurization of Benzene

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A Novel Pd Precursor Loaded γ‐Al₂O₃ with Excellent Adsorbent Performance for Ultra‐Deep Adsorptive Desulfurization of Benzene