Results 111 to 120 of about 56,967 (264)

Solvent-Free Glycerol Transesterification with Propylene Carbonate to Glycerol Carbonate over a Solid Base Catalyst

open access: yes, 2017
Glycerol transesterification using propylene carbonate (PC) to glycerol carbonate (GC) could be efficiently performed under solvent-free conditions using solid base as catalysts involving non-noble metal oxide in combination with hydrotalcites (HTs ...
Sharda Kondawar (3832219)   +1 more
core   +1 more source

Hard‐Magnetic Soft Millirobots in Underactuated Systems

open access: yesAdvanced Robotics Research, EarlyView.
This review provides a comprehensive overview of hard‐magnetic soft millirobots in underactuated systems. It examines key advances in structural design, physics‐informed modeling, and control strategies, while highlighting the interplay among these domains.
Qiong Wang   +4 more
wiley   +1 more source

Improving Glycerol Conversion by Implementing Recycle Streams and Reducing Distillation Steps in Glycerol Carbonate Production

open access: yesJournal of Chemical Engineering Research Progress
The rising surplus of glycerol from biodiesel production drives the need for its valorization into high-value compounds such as glycerol carbonate (GC).
Dinanti Putrisia Wilujeng   +3 more
doaj   +1 more source

Direct synthesis of glycerol carbonate from glycerol and carbon dioxide by Brønsted base catalysis

open access: yes, 2018
The utilisation of carbon dioxide and renewable resources as feedstocks for the chemical industry is highly desirable due to fossil fuel depletion and climate change. Chemicals directly produced from these substrates could lead to a circular economy.
Schenk, Karolin
core   +1 more source

3D Printing of Soft Robotic Systems: Advances in Fabrication Strategies and Future Trends

open access: yesAdvanced Robotics Research, EarlyView.
Collectively, this review systematically examines 3D‐printed soft robotics, encompassing material selections, function integration, and manufacturing methodologies. Meanwhile, fabrication strategies are analyzed in order of increasing complexity, highlighting persistent challenges with proposed solutions.
Changjiang Liu   +5 more
wiley   +1 more source

K2 O/MgFe2 O4磁性固体碱催化剂的制备、表征 及催化酯交换制备碳酸甘油酯Preparation, characterisation and catalytic transesterification for the preparation of glycerol carbonate of magnetic solid base catalyst K2O/MgFe2O4

open access: yesZhongguo youzhi
为了解决生物柴油制备过程中副产物甘油过剩、碳酸甘油酯产率低和催化剂回收困难的问题,以聚乙二醇600(PEG-600)为模板和分散剂,采用溶胶凝胶法制备镁铁氧体(MgFe2O4),以其为载体,KNO3为活性组分前驱体,采用浸渍法制备K2O/MgFe2O4磁性固体碱催化剂。通过X射线衍射、 X射线光电子能谱、扫描电镜、CO2程序升温脱附(CO2-TPD)和磁性分析对催化剂进行表征,并将催化剂用于甘油与碳酸二甲酯酯交换制备碳酸甘油酯的反应中,考察其催化性能。结果表明:制备的K2O/MgFe2O4形成了K-Fe-
张昕,张萍波,范明明,冷炎,蒋平平 ZHANG Xin, ZHANG Pingbo, FAN Mingming, LENG Yan, JIANG Pingping
doaj   +1 more source

Sustainable joint solventless coproduction of glycerol carbonate and ethylene glycol via thermal transesterification of glycerol

open access: yes, 2014
This study focuses on the thermal reaction between glycerol and ethylene carbonate to obtain glycerol carbonate and ethylene glycol under solventless homogeneous operation, the process being a transcarbonation of glycerol or a glycerolysis of ethylene ...
Fuente, E.   +5 more
core   +1 more source

A Bifunctional T3SS‐Effector Simultaneously Cleaves Host MAP Kinase and Inhibits PPM1A Phosphatase

open access: yesAdvanced Science, EarlyView.
Pathogenic bacteria exploit the metalloprotease effector NleD to subvert host defenses. Structural, biochemical, and infection analyses reveal a bifunctional mechanism by which NleD binds and inhibits the host phosphatase PPM1A while preserving its proteolytic activity against MAPKs.
Yaakov Socol   +18 more
wiley   +1 more source

Synthesis of Zeolitic Imidazolate Framework-8 Using Glycerol Carbonate. [PDF]

open access: yesACS Sustain Chem Eng, 2023
Itatani M   +8 more
europepmc   +1 more source

Agnuside Stabilizes the Complex I Assembly Factor NDUFAF6 to Reinforce Mitochondrial Efficiency and Thermogenic Responsiveness

open access: yesAdvanced Science, EarlyView.
ABSTRACT Brown and beige adipocytes dissipate energy as heat, yet effective strategies to enhance their mitochondrial efficiency remain limited. Here, we identify Agnuside (AGN) as a selective stabilizer of the complex I assembly factor NDUFAF6. AGN directly binds cytosolic NDUFAF6, suppresses its ubiquitination, prolongs its half‐life, and facilitates
Qingwen Zhao   +7 more
wiley   +1 more source

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