Специальные темы (промышленная химия) 

 
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Ammonia preparation from the elements (Haber-Bosch process)

Principle

 Ammonia (which is of technical and economic importance) is obtained from the reaction of nitrogen with hydrogen. But this reaction is strongly inhibited (high activation energy is needed to start the reaction) and leads normally to poor yields. Beacuse of this reason Fritz ...

 
Детали

Продукт No: P1140700

Electrostatic flue gas cleaning



Principle

Smoke consists of particles of solid substances suspended in gas. Fog is made up of suspended droplets. In cigarette smoke, as in many industrial processes, smoke and fog are frequently present together. The removal of particles contained in gases - predominately waste ...

 
Детали

Продукт No: P1309200

Model experiment on the desulphurisation of flue gas

Principle

German coal contains an average of one tonne of sulphur per 100 tons of coal. The combustion of this 100 tons of coal "produces" about two tonnes of sulphur dioxide. In comparison a large 700 megawatt power plant which burns about 200 tons of coal per hour produces ...

 
Детали

Продукт No: P1310000

Basic methods in imaging of micro and nanostructures with AFM (Atomic Force Microscopy)



Principle

Approaching a sharp silicon tip mounted on a cantilever to a sample surface leads to an atomic scale interaction. The result is a bend of the cantilever which is detected by a laser. In static mode the resulting deflection is used to investigate the topography of the ...

 
Детали

Продукт No: P2538000

Ammonia preparation from the elements (Haber-Bosch process)

Principle

The Haber-Bosch process was the first large-scale technical method for producing nitrogen compounds based on the nitrogen in the air. The formation of ammonia benefits from a falling temperature and rising pressure since it is an exothermic reaction that is accompanied by a decrease ...

 
Детали

Продукт No: P3110200

Combustion of ammonia to produce nitrogen dioxide

Principle

In the presence of a suitable catalyst and while giving off heat, ammonia-air mixtures burn and form nitrogen monoxide and water. Nitrogen monoxide reacts immediately with the excess oxygen, thereby forming nitrogen dioxide.

At higher temperatures, nitrogen monoxide is ...

...

 
Детали

Продукт No: P3110300

Sulphur trioxide - the sulphuric acid contact process



Principle

The contact process is currently used in the chemical industry to produce sulphuric acid in the high concentrations needed for industrial processes. In this model experiment, platinum-palladium-aluminium-oxide beads are employed as a catalyst for the ...

 
Детали

Продукт No: P3110400

Preparation of iron from oxidic ores (blast furnace process)

Principle

This is a model experiment to show the industrial blast furnace process to produce iron from iron(III) oxide. During the experiment a furnace gas flame that is approximately 10 to 20 cm high can be ignited at the stack outlet. Cavities form in the burning carbon layer. These ...

...

 
Детали

Продукт No: P3110500

Redox reactions between metals and metal oxides (thermite process)

Principle

The experiments described here are highly suitable for demonstrating the different affinity of various metals in view of oxygen. The less noble a metal is the higher its affinity to oxygen and the more thermal energy is released during its oxidation. The technical importance of ...

...

 
Детали

Продукт No: P3110600

Cracking of hydrocarbons

Principle

Under the influence of energy, e.g. heat, light, and electric discharge, all chemical compounds can be broken down into smaller fractions. The reaction can continue up to the elements themselves. In general, low-volatile crude oil components are disintegrated as of approximately ...

...

 
Детали

Продукт No: P3110800

Constituents of polymers (1): The thermal decomposition/oxid

Principle
Polymers decompose on heating. The oxidation products are essentially carbon dioxide and water. PE or PP should be used as plastic material, as here the pollution caused by the decomposition products is relatively small.

 

 
Детали

Продукт No: P7180000

Constituents of polymers (2): The detection of polymer constit



Principle
Polymers decompose when heated. In decomposition products of some plastics the presence of carbon and hydrogen,
in addition to oxygen and chlorine, can be detected. Water is detected with copper sulphate and chloride by means of the Beilstein ...

 
Детали

Продукт No: P7180100

The decomposition of naturally occuring polymers: The decomp

Benefits
  • Easy teaching and efficient learning by using interactive experimentation PHYWE-Software
  • Experiment is part of a complete solution set with experiments for the topic Chemistry of Polymers matched with international curriculum: all topics are covered

 

...
 
Детали

Продукт No: P7180200

Properties of plastics (1): The mechanical properties of pla

What you can learn about
  •  Properties of polymers (plastics)

 

 
Детали

Продукт No: P7180400

Properties of plastics (2): Determination of the densities of



Principle
Plastics have different densities. The range of a plastics density is between 0.8 and 2 g/cm3. The densities of some plastics are determined in this experiment.

 

What you can learn about

  • How to calculate the density of ...

 
Детали

Продукт No: P7180500

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