Stability of Pd nanoparticles on carbon-coated supports under hydrothermal conditions

2018 ◽  
Vol 8 (4) ◽  
pp. 1151-1160 ◽  
Author(s):  
Jiajie Huo ◽  
Robert L. Johnson ◽  
Pu Duan ◽  
Hien N. Pham ◽  
Deyny Mendivelso-Perez ◽  
...  
Keyword(s):  
Heterogeneous Catalysis ◽  
Biomass Conversion ◽  
Pd Nanoparticles ◽  
Hydrothermal Stability ◽  
Hydrothermal Conditions ◽  
Carbon Coated

Hydrothermal stability is one of the major challenges facing heterogeneous catalysis in biomass conversion to chemicals or fuels.

scholarly journals Improved hydrothermal stability of Pd nanoparticles on nitrogen-doped carbon supports

2018 ◽  
Vol 8 (14) ◽  
pp. 3548-3561 ◽  
Author(s):  
Jiajie Huo ◽  
Pu Duan ◽  
Hien N. Pham ◽  
Yee Jher Chan ◽  
Abhaya K. Datye ◽  
...  
Keyword(s):  
Aqueous Phase ◽  
Biomass Conversion ◽  
Pd Nanoparticles ◽  
Hydrothermal Stability ◽  
Carbon Supports ◽  
Nitrogen Doped ◽  
Silica Supports ◽  
Nitrogen Doped Carbon

Carbon supports have been shown to provide better hydrothermal stability than alumina or silica supports, thus attracting more attention for aqueous-phase biomass conversion reactions.

scholarly journals Efficient reductive amination of HMF with well dispersed Pd nanoparticles immobilized in a porous MOF/polymer composite

2020 ◽  
Vol 22 (2) ◽  
pp. 368-378 ◽  
Author(s):  
Vikram V. Karve ◽  
Daniel T. Sun ◽  
Olga Trukhina ◽  
Shuliang Yang ◽  
Emad Oveisi ◽  
...  
Keyword(s):  
Heterogeneous Catalysis ◽  
Polymer Composite ◽  
Reductive Amination ◽  
Pd Nanoparticles ◽  
Nanoparticle Stability ◽  
Polymeric Chains

Making heterogeneous catalysis greener by improving nanoparticle stability in a MOF support modified with short polymeric chains.

scholarly journals Sonochemical preparation of alumina-spheres loaded with Pd nanoparticles for 2-butyne-1,4-diol semi-hydrogenation in a continuous flow microwave reactor

RSC Advances ◽  
2018 ◽  
Vol 8 (13) ◽  
pp. 7029-7039 ◽  
Author(s):  
Emanuela Calcio Gaudino ◽  
Maela Manzoli ◽  
Diego Carnaroglio ◽  
Zhilin Wu ◽  
Giorgio Grillo ◽  
...  
Keyword(s):  
Heterogeneous Catalysis ◽  
Continuous Flow ◽  
Flow Reactor ◽  
Pd Nanoparticles ◽  
Microwave Assisted ◽  
Continuous Flow Reactor ◽  
Microwave Reactor

A novel protocol for microwave-assisted alkyne semi-hydrogenation under heterogeneous catalysis in a continuous flow reactor is reported herein.

scholarly journals Effects of Pretreatment with Ionic Liquids on Cellulose Hydrolysis under Hydrothermal Conditions

Molecules ◽  
2019 ◽  
Vol 24 (19) ◽  
pp. 3572 ◽  
Author(s):  
Toshitaka Funazukuri ◽  
Shingo Ozawa
Keyword(s):  
Ionic Liquids ◽  
Filter Paper ◽  
Biomass Conversion ◽  
Batch Reactor ◽  
Cellulose Hydrolysis ◽  
Reaction Rates ◽  
Crystalline Cellulose ◽  
Hydrothermal Conditions ◽  
Imidazolium Chloride ◽  
Product Yields

Hydrothermal hydrolysis in hot pressurized liquid water (HPLW) is attractive for biomass conversion into valuable products because it achieves high reaction rates without catalysts and additives. The hydrothermal hydrolysis of high crystalline cellulose requires higher reaction temperature than polysaccharides having low crystallinity. It can be expected to increase the reaction rate or decrease temperature by decreasing the crystallinity. In the present study ashless filter paper as a fibrous pure cellulose sample was pretreated with ionic liquids (ILs) such as imidazolium chloride ILs containing alkyl side chains ranging from two to six carbons, and with an aqueous solution of bis(ethylenediamine ammonium) copper (BEDC). Herein, the pretreatment with ILs was to regenerate filter paper: dissolving in ILs at 373 K for 120 min or in an aqueous BEDC solution at room temperature, precipitating by adding water, washing the solid, and then drying. Subsequently, the pretreated filter paper samples were hydrolyzed at 533 K and 5.0 MPa in HPLW in a small semi-batch reactor, and the effects of the pretreatment with ILs or BEDC on reaction rates and product yields were examined. While the crystallinity indexes with all ILs and BEDC after the pretreatments decreased to 44 to 47 from the original sample of 87, the reaction rates and product yields were significantly affected by the IL species. At 533 K and 5.0 MPa, the dissolution rate with [AMIM][Cl] was nine times as fast as that for untreated sample.

Insights into the Hydrothermal Stability of ZSM-5 under Relevant Biomass Conversion Reaction Conditions

ACS Catalysis ◽  
2015 ◽  
Vol 5 (7) ◽  
pp. 4418-4422 ◽  
Author(s):  
David W. Gardner ◽  
Jiajie Huo ◽  
Thomas C. Hoff ◽  
Robert L. Johnson ◽  
Brent H. Shanks ◽  
...  
Keyword(s):  
Biomass Conversion ◽  
Hydrothermal Stability ◽  
Reaction Conditions ◽  
Conversion Reaction

Hierarchical nanospheres based on Pd nanoparticles dispersed on carbon coated magnetite cores with a mesoporous ceria shell: a highly integrated multifunctional catalyst

2015 ◽  
Vol 44 (37) ◽  
pp. 16592-16601 ◽  
Author(s):  
Yinle Li ◽  
Zhuqing Zhang ◽  
Jianfeng Shen ◽  
Mingxin Ye
Keyword(s):  
Coupling Reaction ◽  
Cross Coupling ◽  
Pd Nanoparticles ◽  
Catalytic Performance ◽  
The Novel ◽  
Cross Coupling Reaction ◽  
Carbon Coated ◽  
Multifunctional Catalyst ◽  
Excellent Catalytic Performance

The novel multifunctional Fe3O4@C–Pd@CeO2 nanospheres show excellent catalytic performance in the Suzuki–Miyaura cross-coupling reaction and the reduction of 4-nitrophenol.

ChemInform Abstract: New Methods of Heterogeneous Catalysis for Lignocellulosic Biomass Conversion to Chemicals

ChemInform ◽  
2014 ◽  
Vol 45 (35) ◽  
pp. no-no
Author(s):  
B. N. Kuznetsov ◽  
N. V. Chesnokov ◽  
O. V. Yatsenkova ◽  
V. I. Sharypov
Keyword(s):  
Heterogeneous Catalysis ◽  
Lignocellulosic Biomass ◽  
Biomass Conversion ◽  
New Methods ◽  
Lignocellulosic Biomass Conversion
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