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Process for preparing element halides

A technique for halides, halogen compounds, used in the manufacture of elemental halides

Inactive Publication Date: 2007-10-24
WACKER CHEM GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Furthermore, in some of these processes, by-products are formed which have to be considered in terms of occupational hygiene and environmental toxicity

Method used

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  • Process for preparing element halides

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0095] Due to the availability and heat resistance of fumed silica, devices and reaction supports comprising this material were used. It is not affected under the reaction conditions. In order to protect the glass device from reaction and thermal stress, the reactants are introduced into the reactor on a fumed silica support, which consists of a fumed silica tube with feet cut longitudinally in half. Thus, due to the small surface area and significantly lower temperature compared to pulverized or granular reaction mixtures, the reaction rate of the outer walls of the reactor was significantly reduced, and no rupture of the outer walls of the reactor was observed during a single reaction.

[0096] 1 to 1.5 g of a mixture of the listed materials and the likewise listed carbonaceous materials are placed on a fumed silica support (a tube of fumed silica cut in half, 13 mm in diameter, approximately 100 mm in length, fumed silica foot 5mm). The fumed silica carrier was introduced...

Embodiment 2

[0121] Desert sand with a maximum particle size of 0.5mm and SiO composed of activated carbon with a particle size of 2 to 2.5 mm in a ratio of 1:4 2 / C mixture 1 to 1.5 g. Fumed silica carrier is packed in reaction tube (glass tube, diameter is 30mm, has two chimneys, downcomer and upper conduit, average distance is 100mm), this reaction tube is packed into microwave reactor (Panasonic Household Appliances ) within the hot spot. A stream of chlorine diluted with argon (chlorine 40 liters / hour, argon 10 liters / hour) was passed through the reaction tube. After heating by activation of the microwave apparatus, the reaction product was condensed in a cold trap filled with pentane with an ethanol cold bath below -30°C. Carry out quantitative and qualitative analysis. The resulting reaction product is SiCl 4 .

[0122] Convert 50 to 60% of desert sand within a reaction time of 15 to 20 minutes, in which SiO 2 +2C+2Cl 2 → SiCl 4 +2CO is then calculated from the weight devia...

Embodiment 3

[0124] A mixture of hydrogen chloride (60 liters / hour) and nitrogen (40 liters / hour) was passed through the test apparatus described in Example 1. Convert 50 to 60% of desert sand within a reaction time of 15 to 20 minutes, in which SiO 2 +2C+2Cl 2 → SiCl 4 +2CO is then calculated from the weight deviation of the sample. If no further weight loss was observed after 5 minutes of continued irradiation, the experiment was stopped. Considering SiO in sand 2 The content is about 80% and CO is formed from CO in it 2 And in the case of the influence of Boudouard equilibrium of C, the SiO 2 actual conversion rate. Therefore, based on SiO x The source can achieve substantially quantitative yields.

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Abstract

To specify vehicles carrying persons who can be eyewitnesses in the event of a traffic accident. This vehicle detection apparatus is for detecting any vehicle located in the vicinity of an accident site at the time of occurrence of an accident and comprises a vehicle information storage part for storing vehicle identifiers; a one's own vehicle impact detection storage part for storing information about witnessing vehicles; a vehicle information reader part for obtaining vehicle identifiers from the vehicle information storage part of another vehicle detection apparatus; and an impact detection part for detecting impact and for obtaining the vehicle identifiers from the vehicle information reader part upon detection of the impact to store the vehicle identifiers as information about the eyewitnessing vehicles in the one's own vehicle impact detection storage part. Thus when detecting impact on a vehicle, the apparatus can obtain the identification numbers of nearby vehicles and specify any vehicles carrying persons who can be eyewitnesses of the traffic accident.

Description

technical field [0001] The invention describes a process for the preparation of elemental halides, characterized in that, in a first step, a mixture of materials containing the individual elements and carbon or carbonaceous materials is produced, which is combined with the selected The halogens, hydrogen halides or mixtures thereof which are gaseous under the reaction conditions are contacted and heated, whereby the energy is input by means of an alternating electromagnetic field. Background technique [0002] Elemental halides are compounds of elements with the halogens fluorine, chlorine, bromine, iodine or mixtures of these halogens. Here, the element-halogen compound can have an ionic character, e.g. a halogen-alkali metal bond, such as NaCl, or a predominantly covalent character, e.g. a metal-halogen bond, such as SiCl 4 , or a non-metal-halogen bond, such as PCl 3 . [0003] Elemental halides are widely used in industry. Some elements, such as aluminum, titanium, b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B9/00C01B9/02C01B9/04C01B9/06C01B9/08B01J19/12C01B33/107C01B35/06C01F7/48C01F7/50C01F7/56C01F7/64C01G27/04C01G49/10
Inventor 诺贝特·奥纳
Owner WACKER CHEM GMBH
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