scholarly journals Insight into Biomass Upgrade: A Review on Hydrogenation of 5-Hydroxymethylfurfural (HMF) to 2,5-Dimethylfuran (DMF)

Molecules ◽  
2021 ◽  
Vol 26 (22) ◽  
pp. 6848
Author(s):  
Nor Azam Endot ◽  
Ramli Junid ◽  
Mohamad Shazwan Shah Jamil
Keyword(s):  
Bimetallic Catalysts ◽  
Liquid Fuel ◽  
Noble Metals ◽  
Reaction Conditions ◽  
Recent Developments ◽  
History Of ◽  
Effect Of The Support ◽  
Future Work ◽  
Insight Into ◽  
The Ideal

Recent developments in the transformation of biobased 5-hydroxymethylfurfural (HMF) into a potential liquid fuel, 2,5-dimethylfuran (DMF), are summarised. This review focuses briefly on the history of HMF conversion to DMF in terms of the feedstock used and emphasises the ideal requirements in terms of the catalytic properties needed in HMF transformation into DMF. The recent state of the art and works on HMF transformation into DMF are discussed in comparison to noble metals and non-noble metals as well as bimetallic catalysts. The effect of the support used and the reaction conditions are also discussed. The recommendations for future work and challenges faced are specified.

scholarly journals Through Liquid Democracy to Sustainable Non-Bureaucratic Government

2014 ◽  
Vol 6 (2) ◽  
pp. 216-230 ◽  
Author(s):  
Alois Paulin
Keyword(s):  
Decision Making ◽  
Self Management ◽  
Decision Making Process ◽  
Recent Developments ◽  
Liquid Democracy ◽  
History Of ◽  
Self Service ◽  
Blank Slate ◽  
Collaborative Decision ◽  
Insight Into

We summarize the concept of Self-Service Government (ss-Gov) as presented earlier and explore how the principles of Liquid Democracy (LD) can be applied in ss-Gov for collaborative decision making. We provide a thorough insight into the history of LD and summarize its recent developments. By combining ss-Gov and LD, we develop the concept of Sustainable, Non-Bureaucratic Government (SNBG) as a novel, blank-slate approach to government of eligibilities within- and towards governmental systems. We argue that such entanglement of LD with ss-Gov results in a closed-circuit system that can provide end-to-end self-management of jural relations. Thus, we argue, SNBG is a vision concept capable to enable morphable self-managed government which requires virtually no mediatory human agents for government. We discuss the feasibility of such approach based on a Gedankenexperiment featuring a modern parliamentary decision-making process.

scholarly journals Oxidation of 5-Hydroxymethylfurfural on Supported Ag, Au, Pd and Bimetallic Pd-Au Catalysts: Effect of the Support

Catalysts ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 115
Author(s):  
Dmitrii German ◽  
Ekaterina Pakrieva ◽  
Ekaterina Kolobova ◽  
Sónia A. C. Carabineiro ◽  
Marta Stucchi ◽  
...  
Keyword(s):  
Photoelectron Spectroscopy ◽  
Bimetallic Catalysts ◽  
Inductively Coupled Plasma ◽  
Noble Metals ◽  
Nitrogen Adsorption ◽  
Carbon Support ◽  
Atomic Emission ◽  
Indicator Method ◽  
X Ray ◽  
Effect Of The Support

Oxidation of 5-hydroxymethylfurfural (HMF), a major feedstock derived from waste/fresh biomass, into 2,5-furandicarboxylic acid (FDCA) is an important transformation for the production of biodegradable plastics. Herein, we investigated the effect of the support (unmodified and modified titania, commercial alumina, and untreated and treated Sibunit carbon) of mono- and bimetallic catalysts based on noble metals (Ag, Au, Pd) on selective HMF oxidation with molecular oxygen to FDCA under mild and basic reaction conditions. The higher selectivity to FDCA was obtained when metals were supported on Sibunit carbon (Cp). The order of noble metal in terms of catalyst selectivity was: Ag < Au < Pd < PdAu. Finally, FDCA production on the most efficient PdAu NPs catalysts supported on Sibunit depended on the treatment applied to this carbon support in the order: PdAu/Cp < PdAu/Cp-HNO3 < PdAu/Cp-NH4OH. These bimetallic catalysts were characterized by nitrogen adsorption-desorption, inductively coupled plasma atomic emission spectroscopy, high resolution transmission electron microscopy, energy dispersive spectroscopy, X-ray diffraction, Hammet indicator method and X-ray photoelectron spectroscopy. The functionalization of Sibunit surface by HNO3 and NH4OH led to a change in the contribution of the active states of Pd and Au due to promotion effect of N-doping and, as a consequence, to higher FDCA production. HMF oxidation catalyzed by bimetallic catalysts is a structure sensitive reaction.

scholarly journals Measurement, self-tracking and the history of science: An introduction

2019 ◽  
Vol 58 (2) ◽  
pp. 103-116 ◽  
Author(s):  
Fenneke Sysling
Keyword(s):  
Life Course ◽  
History Of Science ◽  
Special Issue ◽  
The Past ◽  
History Of ◽  
The Relationship ◽  
Insight Into ◽  
The Ideal

This article introduces the papers contained in this special issue and explores a new field of interest in the history of science: that of measurement and self-making. In this special issue, we aim to show that a focus on self-tracking and individualized measurement provides insight into the ways technologies of quantification, when applied to individual bodies and selves, have introduced new notions of autonomy, responsibility, citizenship, and the possibility of self-improvement and life-course decisions. This introduction is an exploratory history of measurement and self-making, and it provides a discussion of self-tracking in the past as part of the genealogy of present-day digital self-tracking technologies. It concludes that a focus on measurement and self-making highlights the relationship between measurement and morality, the making of the ideal of an autonomous self, capable of improvement, and the relationship between autonomy and surveillance.

scholarly journals Through Liquid Democracy to Sustainable Non-Bureaucratic Government

2014 ◽  
Vol 6 (2) ◽  
Author(s):  
Alois Paulin
Keyword(s):  
Decision Making ◽  
Self Management ◽  
Decision Making Process ◽  
Recent Developments ◽  
Liquid Democracy ◽  
History Of ◽  
Self Service ◽  
Blank Slate ◽  
Collaborative Decision ◽  
Insight Into

We summarize the concept of Self-Service Government (ss-Gov) as presented earlier and explore how the principles of Liquid Democracy (LD) can be applied in ss-Gov for collaborative decision making. We provide a thorough insight into the history of LD and summarize its recent developments. By combining ss-Gov and LD, we develop the concept of Sustainable, Non-Bureaucratic Government (SNBG) as a novel, blank-slate approach to government of eligibilities within- and towards governmental systems. We argue that such entanglement of LD with ss-Gov results in a closed-circuit system that can provide end-to-end self-management of jural relations. Thus, we argue, SNBG is a vision concept capable to enable morphable self-managed government which requires virtually no mediatory human agents for government. We discuss the feasibility of such approach based on a Gedankenexperiment featuring a modern parliamentary decision-making process.

Transition metal-catalyzed dehydrogenation of amines

2018 ◽  
Vol 3 (9) ◽  
Author(s):  
Daniël L. J. Broere
Keyword(s):  
Transition Metal ◽  
Metal Complexes ◽  
Transition Metal Complexes ◽  
Noble Metals ◽  
Side Reactions ◽  
Catalytic Dehydrogenation ◽  
Reaction Conditions ◽  
Cyclic Amines ◽  
Recent Developments ◽  
Metal Catalyzed

Abstract This review focuses on the use of homogeneous transition metal complexes for the catalytic dehydrogenation of amines for synthetic purposes, and for hydrogen storage applications. The catalytic dehydrogenation of primary, secondary and cyclic amines is reviewed looking at reaction conditions, different catalysts and common side reactions. Recent developments in this active field of research showcase how cooperative ligands and photocatalysts can overcome the need for noble metals or harsh reaction conditions.

No fear of George Kingsley Zipf

10.1558/37291 ◽  
2018 ◽  
Vol 2 (2) ◽  
pp. 242-263
Author(s):  
Stefano Rastelli ◽  
Kook-Hee Gil
Keyword(s):  
Minimalist Program ◽  
Classroom Research ◽  
Language Design ◽  
Efficient Computation ◽  
Generative Linguistics ◽  
The Third ◽  
Factor Effect ◽  
Language Classroom ◽  
Recent Developments ◽  
Insight Into

This paper offers a new insight into GenSLA classroom research in light of recent developments in the Minimalist Program (MP). Recent research in GenSLA has shown how generative linguistics and acquisition studies can inform the language classroom, mostly focusing on what linguistic aspects of target properties should be integrated as a part of the classroom input. Based on insights from Chomsky’s ‘three factors for language design’ – which bring together the Faculty of Language, input and general principles of economy and efficient computation (the third factor effect) for language development – we put forward a theoretical rationale for how classroom research can offer a unique environment to test the learnability in L2 through the statistical enhancement of the input to which learners are exposed.

The Subaltern Speak- A Study On The Culture Of The Arunachalis With Special Reference To Mamang Dai’s The Legends Of Pensam

2019 ◽  
Vol 5 (4) ◽  
pp. 14-20
Author(s):  
Ms. Cheryl Antonette Dumenil ◽  
Dr. Cheryl Davis
Keyword(s):  
Special Reference ◽  
Small World ◽  
Natural World ◽  
Arunachal Pradesh ◽  
North East India ◽  
North East ◽  
Shared History ◽  
History Of ◽  
And Gender ◽  
Insight Into

North- East India is an under veiled region with an awe-inspiring landscape, different groups of ethnic people, their culture and heritage. Contemporary writers from this region aspire towards a vision outside the tapered ethnic channel, and they represent a shared history. In their writings, the cultural memory is showcased, and the intensity of feeling overflows the labour of technique and craft. Mamang Dai presents a rare glimpse into the ecology, culture, life of the tribal people and history of the land of the dawn-lit mountains, Arunachal Pradesh, through her novel The Legends of Pensam. The word ‘Pensam’ in the title means ‘in-between’,  but it may also be interpreted as ‘the hidden spaces of the heart’. This is a small world where anything can happen. Being adherents of the animistic faith, the tribes here believe in co-existence with the natural world along with the presence of spirits in their forests and rivers. This paper attempts to draw an insight into the culture and gender of the Arunachalis with special reference to The Legends of Pensam by Mamang Dai.

Collected Documents on the History of the Pskov Orthodox Mission: A Recent Publication

2018 ◽  
pp. 306-312
Author(s):  
Veniamin F. Zima ◽  
Keyword(s):  
Personal Data ◽  
Prisoners Of War ◽  
Inner Life ◽  
Great Patriotic War ◽  
Occupied Territories ◽  
History Of ◽  
Underground Resistance ◽  
The Baltic ◽  
The Church ◽  
Insight Into

The reviewed work is devoted to a significant, and yet little-studied in both national and foreign scholarship, issue of the clergy interactions with German occupational authorities on the territory of the USSR in the days of the Great Patriotic War. It introduces into scientific use historically significant complex of documents (1941-1945) from the archive of the Office of the Metropolitan Sergius (Voskresensky) of Vilnius and Lithuania, patriarchal exarch in Latvia and Estonia, and also records from the investigatory records on charges against clergy and employees concerned in the activities of the Pskov Orthodox Mission (1944-1990). Documents included in the publication are stored in the archives of Moscow, St. Petersburg, Estonia, Lithuania, Leningrad, Novgorod, and Pskov regions. They allow some insight into nature, forms, and methods of the Nazi occupational regime policies in the conquered territories (including policies towards the Church). The documents capture religious policies of the Nazis and inner life of the exarchate, describe actual situation of population and clergy, management activities and counterinsurgency on the occupied territories. The documents bring to light connections between the exarchate and German counterintelligence and reveal the nature of political police work with informants. They capture the political mood of population and prisoners of war. There is information on participants of partisan movement and underground resistance, on communication net between the patriarchal exarchate in the Baltic states and the German counterintelligence. Reports and dispatches of the clergy in the pay of the Nazis addressed to the Metropolitan Sergius (Voskresensky) contain detailed activity reports. Investigatory records contain important biographical information and personal data on the collaborators. Most of the documents, being classified, have never been published before.

Green Synthesized Nanomaterials as Theranostic Platforms for Cancer Treatment: Principles, Challenges and the Road Ahead

2019 ◽  
Vol 26 (8) ◽  
pp. 1311-1327 ◽  
Author(s):  
Pala Rajasekharreddy ◽  
Chao Huang ◽  
Siddhardha Busi ◽  
Jobina Rajkumari ◽  
Ming-Hong Tai ◽  
...  
Keyword(s):  
Nanoparticle Synthesis ◽  
Research Field ◽  
Synthesis Methods ◽  
Synthetic Approach ◽  
Future Directions ◽  
The Road ◽  
New Methods ◽  
Recent Developments ◽  
Theranostic Applications ◽  
Insight Into

With the emergence of nanotechnology, new methods have been developed for engineering various nanoparticles for biomedical applications. Nanotheranostics is a burgeoning research field with tremendous prospects for the improvement of diagnosis and treatment of various cancers. However, the development of biocompatible and efficient drug/gene delivery theranostic systems still remains a challenge. Green synthetic approach of nanoparticles with low capital and operating expenses, reduced environmental pollution and better biocompatibility and stability is a latest and novel field, which is advantageous over chemical or physical nanoparticle synthesis methods. In this article, we summarize the recent research progresses related to green synthesized nanoparticles for cancer theranostic applications, and we also conclude with a look at the current challenges and insight into the future directions based on recent developments in these areas.

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