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Technology Name
Briefcase
Scientist
1482
Modification of the electronic properties of layered-type semiconductors can be accomplished by doping/alloying of the semiconductor. In the present disclosure we show that doping of MoS2 and WS2 nanotubes/nanoparticles can be accomplished by doping with either Re (n-type) or Nb (p-type) foreign atoms...

Modification of the electronic properties of layered-type semiconductors can be accomplished by doping/alloying of the semiconductor. In the present disclosure we show that doping of MoS2 and WS2 nanotubes/nanoparticles can be accomplished by doping with either Re (n-type) or Nb (p-type) foreign atoms. These nanoparticles combine both superior mechanical properties and high electrical conductivity.

The main market for these kinds of nanoparticles is in thin films that combine superior mechanical and electrical properties. For example, as part of touch screensin addition, polymer nanocomposites containing such nanoparticles can be used among other things in electromagnetic shielding and conductive films for packaging and high performance adhesives. These nanoparticles are expected to reveal interesting catalytic applications, for example to obtain sulfur free gasoline. They can be used in third generation photovoltaic cells, etc.

Applications


  • Catalytic processes for energy storage and sulfur free gasoline.
  • Polymer nanocomposites for packaging
  • Electromagnetic shielding.
  • Conductive glues/adhesives with superior performance.
  • Energy storage.

Advantages


The combination of superior mechanical properties and high electrical conductivity offers new kinds of applications in catalysis; energy storage; high performance nanocomposites and in macroelectronics.

 

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  • Prof. Reshef Tenne
1102
A new high-yield method for producing aryl alkenes. Catalytic carbon-carbon bond formation by C-H activation is a topic of much current interest. Significant progress has been made in recent years in the development of synthetically useful catalytic addition of arenes to alkenes to give the saturated...

A new high-yield method for producing aryl alkenes. Catalytic carbon-carbon bond formation by C-H activation is a topic of much current interest. Significant progress has been made in recent years in the development of synthetically useful catalytic addition of arenes to alkenes to give the saturated aryl alkenes. Catalytic oxidative coupling to give aryl alkenes, in which the double bond is preserved, is a highly desirable goal. Such a reaction, which does not require the utilization of a reactive substituent and does not produce waste, may have an advantage over other methods for the preparation of aromatic alkenes. While good catalytic activity was achieved with some alkenes, acrylates resulted in low activity. Furthermore, the use of peroxide oxidants and acetic acid solvent in these systems is problematic from the industrial point of view. The present invention consists of a novel oxidative coupling of arenes with alkenes to yield aryl alkenes, in the presence of ruthenium or osmium compounds as catalysts.

Applications


  • Preparation of various aryl alkenes, which are useful intermediates in the chemical, pharmaceutical and agrochemical industries

Advantages


  • There is no need for acid solvent or a peroxide
  • Much lower pressure of CO may be used compared to other methods

Technology's Essence


In the outlined technology it was discovered that aryl alkenes can be produced by reaction of arenes with alkenes in the presence of ruthenium or osmium compounds as catalysts. The reaction can be carried out in the presence of molecular oxygen (O2) as the oxidant. In the absence of O2 the alkene itself serves as the oxidant. For example, reaction of benzene with methyl acrylate and O2 produces methyl cinnamate and water. In the absence of O2 methyl cinnamate and methyl propionate are formed.

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  • Prof. David Milstein
1507
One-step synthesis of primary amines from alcohols and ammonia under mild conditions.Amines are widely used in the production of numerous products for multiple industries and their use is expected to increase. Global amines market is expected to reach over $14 billion by 2020, with an average annual...

One-step synthesis of primary amines from alcohols and ammonia under mild conditions.
Amines are widely used in the production of numerous products for multiple industries and their use is expected to increase. Global amines market is expected to reach over $14 billion by 2020, with an average annual growth of 3.5%.
Primary amines are most useful in the larger markets of ethanolamines and fatty amines.
Current synthetic methods require harsh reaction conditions, are non-specific and generate toxic waste. The outlined technology utilizes a novel catalyst to synthesize primary amines in a simple single-step fashion directly from alcohols and ammonia.

Applications


• Production of primary amines for numerous industries (agrochemicals, surfactants, personal care, water treatment, fine chemicals, plastics, dyes, pigments, food additives and pharmaceuticals)

Advantages


  • Mild reaction conditions
  • Single step synthesis
  • High yields
  • No solvent required
  • No toxic reagents or by-products
  • Ecologically and economically beneficial

Technology's Essence


Amines are a very important family of compounds used in multiple industries. The presented technology uses selective catalytic synthesis of primary amines from primary alcohols and ammonia. This simple, one-step, easily applicable reaction delivers primary amines in good yields, in addition to valuable environmental and economic advantages.

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  • Prof. David Milstein

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