tellurium containing antimony

Method for preparation of antimony and tellurium ...

 · The present invention relates to a method for preparation of antimony and tellurium-containing metal oxide catalysts. More particularly, it is concerned with a method for preparing antimony and tellurium-containing metal oxide catalysts having high activity and good physical properties which are useful in the oxidation reaction of organic ...

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C22B 30 - Obtaining antimony, arsenic or bismuth - Patents ...

CN102912125A Method for separating lead and antimony in antimony-containing lead ... CN102690946A Method for comprehensively extracting valuable metals from tellurium-containing …

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Tellurium - USGS

Tellurium Chapter R of. ... yttrium zirconium niobium molybdenum technetium ruthenium rhodium palladium silver cadmium indium tin antimony tellurium iodine xenon ... is in the public domain, it also may contain copyrighted materials as noted in the text. Permission to reproduce copyrighted items must be secured from the copyright owner.

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Selective oxidation of hydrocarbons employing tellurium ...

The major drawback of using tellurium containing catalysts is tellurium apresent address: Mobil Research and Development Corporation, Paulsboro, New Jersey 08066, U.S.A. 0166-9834/90/$03.50 1990 Elsevier Science Publishers B.V. 150 volatility when in its lower oxidation state (Te4~) generated under the redox conditions of the catalytic operation.

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EP0408718A4 - Lead-antimony alloy suitable for making ...

EXAMPLE I A series of alloys having varying tellurium levels were prepared in a heated graphite crucible by melting a base lead, antimony, arsenic, tin alloy to a final composition containing 1.3% antimony, 0.16% arsenic and 0.23% tin, balance essentially lead, Tellurium metal was added to the crucible at ^ …

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Tellurium (Te) - Chemical properties, health and ...

Tellurium. Tellurium is a semimetallic, lustrous, crystalline, brittle, silver-white element. It is usually available as a dark grey powder, it has the properties both of the metals and the non metals. Tellurium forms many compounds corresponding to those of sulfur and selenium. When burned in air tellurium has a greenish-blue flame and forms ...

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List Minerals Associated with Gold

To know what type of rock is gold associated with you must see that the minerals most common in placer deposits are platinum, iridosmine, magnetite, iron pyrites, ilmenite, zircon, garnets, rutile and barytes; wolfram, scheelite, brookite and diamonds are less common. Diamonds are associated with gold in Brazil, and also occasionally in the Urals and in the United States.

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Molybdenum, Arsenic, Antimony, Vanadium, Bismuth, …

 · Search for Molybdenum, Arsenic, Antimony, Vanadium, Bismuth, Tungsten, Selenium, Or Tellurium Containing Patents and Patent …

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NO CARRIER ADDED SEPARATION OF TELLURIUM FROM …

specific radioactivity by proton irradiation of antimony targets. Methods for separation of tellurium from antimony, which were developed earlier, were based on co-precipitation with isotopic carrier (Novey, 1951; Bukshpan et al., 1975 ) or non-isotopic selenium carrier (Glendenin, 1975).

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Metalloid compounds as drugs - PubMed Central (PMC)

The six elements commonly known as metalloids are boron, silicon, germanium, arsenic, antimony, and tellurium. Metalloid containing compounds have been used as antiprotozoal drugs. Boron-based drugs, the benzoxaboroles have been exploited as potential treatments for neglected tropical diseases ...

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Sequential determination of arsenic, selenium, antimony ...

Sequential determination of arsenic, selenium, antimony, and tellurium in foods via rapid hydride evolution and atomic absorption spectrometry

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Tellurium - Periodic Table of Elements and Chemistry

So far as we know, no ternary alloys containing tellurium, and corresponding to Britannia or Babbitt metals, have been prepared. Methods and Apparatus. In order to study the properties of the tellurium-antimony alloys, sufficient of each metal was taken to form a button weighing about 20 grammes.

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Antimony Reference — tellurium 2.1.5 documentation

Antimony is available as a library and a Python package. Antimony is the main method of building models in Tellurium. Its main features include: Easily define species, reactions, compartments, events, and other elements of a biological model. Package and …

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What items contain tellurium - answers.com

What items contain tellurium? ... so we are learning that tellurium is used in a lot of things. ... There are seven metalloid elements. They are boron, silicon, germanium, arsenic, antimony ...

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Tellurium - oer2go.org

Tellurium was discovered in Transylvania (today part of Romania) in 1782 by Franz-Joseph Müller von Reichenstein in a mineral containing tellurium and gold. Martin Heinrich Klaproth named the new element in 1798 after the Latin word for "earth", tellus. Gold telluride minerals are the most notable natural gold compounds.

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C22B 30 - Obtaining antimony, arsenic or bismuth - Patents ...

CN103397180A Method for recovering tellurium, bismuth, antimony, and copper from complex ... CN102690946B Method for comprehensively extracting valuable metals from tellurium-containing ...

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Who Discovered Tellurium - Want to Know it

Tellurium was discovered in the late 18th century by Austrian mineralogist Franz-Joseph Müller von Reichenstein. He was studying gold ore from mines in modern day Romaina, where he was the chief mining inspector. He soon discovered that the gold ore did not contain antimony as was expected and he concluded it was bismuth sulfide.

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C&EN: IT'S ELEMENTAL: THE PERIODIC TABLE - TELLURIUM

The discovery of tellurium by Franz J. Müller in 1782 almost went unnoticed.He was examining the gold-containing ores of Transylvania, from one of which, aurum paradoxum, a supposedly pure sample of antimony (a neighbor of tellurium in the periodic table) had been obtained.

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Tellurium - Wikipedia

Tellurium is a chemical element with the symbol Te and atomic number 52. It is a brittle, mildly toxic, rare, silver-white metalloid. Tellurium is chemically related to selenium and sulfur, all three of which are chalcogens. It is occasionally found in native form as elemental crystals.

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Antimony (Sb) - Chemical properties, Health and ...

Antimony is a semimetallic chemical element which can exist in two forms: the metallic form is bright, silvery, hard and brittle; the non metallic form is a grey powder. Antimony is a poor conductor of heat and electricity, it is stable in dry air and is not attacked by dilute acids or alkalis. Antimony and some of its alloys expand on cooling.

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It's Elemental - The Element Tellurium

Tellurium is a semiconductor and is frequently doped with copper, tin, gold or silver. Tellurium is also used to color glass and ceramics and is one of the primary ingredients in blasting caps. Tellurium is primarily used as an alloying agent. Small amounts of tellurium are added to copper and stainless steel to make them easier to machine and ...

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Chemistry for Kids: Elements - Metalloids

Antimony and tellurium are primarily used in metal alloys. Tellurium gets its name from the Latin word "tellus" which means "earth." Antimony has been known about since ancient times and was used as a cosmetic by the Ancient Egyptians. Antimony gets its name …

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What is Antimony? - Definition, Uses & Facts | Study.com

Introduction to Antimony. If we step back in time, back to biblical periods (both A.D. and B.C.), compounds and minerals containing antimony were used for a variety of purposes.

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Comprehensive Heterocyclic Chemistry III :: Content

Rings containing Selenium or Tellurium Rings containing Phosphorus Rings containing Arsenic, Antimony, or Bismuth Rings containing Silicon to Lead Rings containing Boron Rings containing Other Elements Multiple Macroheterocyclic Rings. Volume 13 …

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The method of separation of daughter radionuclide ...

The method of separation of daughter radionuclide tellurium-125m from the parent antimony-125, including the application of radionuclides on the adsorbent and elution, characterized in that the sorbent use oxides or hydroxides antimony, which after application of radionuclides is subjected to heat treatment, and alwero who have carried out at ...

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Simultaneous determination, by hydride generation and ...

A standard additions technique is used for quantification. This method is relatively free from interferences and is applied to the determination of arsenic, antimony, selenium and tellurium in silicate rocks containing gold and the platinum-group metals (noble metals), …

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Sulfides, Selenides and Tellurides: rebellious and ...

It is found with other telluride minerals in some precious metal ore deposits. Petzite: A gold and silver telluride that is mostly silver. Silver content is usually three times that of gold. Nagyagite: This is a complex mineral containing gold, tellurium, sulfur, lead, antimony and bismuth that occurs in epithermal veins.

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Separation of tellurium from tellurium-antimony-containing ...

 · A method for separating tellurium from a tellurium-antimony-containing metal oxide catalyst comprising heating the tellurium-antimony-containing metal oxide catalyst at a temperature of from about 900° C. to about 1,000° C. in a non-reducing gaseous atmosphere to evaporate the tellurium component separately from the antimony-containing catalyst.

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Class 420: ALLOYS OR METALLIC COMPOSITIONS ( Manual of U.S ...

Lead, bismuth, antimony, calcium, selenium or tellurium containing 42 Over 0.05 percent sulfur, over 0.04 percent phosphorus or sulfur or phosphorus added in any amount to promote machinability

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AU-AG-TE VEIN DEPOSITS (MODEL 22b; Cox and Bagby, …

AU-AG-TE VEIN DEPOSITS (MODEL 22b; Cox and Bagby, 1986) by Karen D. Kelley, Theodore J. Armbrustmacher, and Douglas P. Klein SUMMARY OF RELEVANT GEOLOGIC, GEOENVIRONMENTAL, AND GEOPHYSICAL INFORMATION Deposit geology Deposits consist of native gold and (or) gold-silver telluride minerals in high-grade quartz veins and (or) low-grade,

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