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泵行業(yè)鉑族金屬的重要化合物
鹵化物:所有細(xì)碎粉末狀的鉑族金屬在加熱的情況下同氯反應(yīng)，在一定的條件下生成揮發(fā)性的鹵化物。鉑族金屬的鹵化物在這出元素的化學(xué)分析中起著極其重要的作用。
氧化物和氫氧化物:鉑族金屬的氧化物和氫氧化物在這些元素的化學(xué)分析中占有一定位置。銥、鋨、釕的氧化物具有很高的揮及性，可以利用此特性與其他金屬分離。
硫酸鹽和亞硫酸鹽:鉑族金屬的硫酸鹽鹽和亞硫酸鹽容易水解，在溶液中經(jīng)常會(huì)有不穩(wěn)定的水合離子，也有穩(wěn)定的聚合物基化合物以及復(fù)雜的多聚水合硫酸鹽。
硫化物:形成金屬硫化物是鉑族金屬的共有特性，在化學(xué)分析中占有一定位置，可以通過各種方法制得它們的硫化物，如鉑族金屬的氯化物溶液中通入硫化氫或用堿金屬硫化物作用時(shí)可以得到它們相應(yīng)的硫化物。硫化物的形成被廣泛地用來作為鉑族金屬的沉淀劑，以便從其他賤金屬中分離出來。鉑族金屬硫化物在水中的溶解度減少的順序排列為IrS8> Rh2Sz > PtS2 > RuzS> OsS, > PdS.在復(fù)雜的硝酸溶液中，銥不被作為硫化物形武沉淀，可以利用這一性質(zhì)從RhP和Pd中分離I.在高溫(約3000)下，堿金屬硫化物同鉑族金風(fēng)的硫酸鹽相互作用，銥和銠兩種硫化物已不再被完全沉淀，這就可以從鉑中分離銥和銠。渣漿泵廠家
硝酸鹽:鉑族金屬中只有鈀可以直接被硝酸溶解，形成相應(yīng)的硝酸鹽，結(jié)晶成為PaONO容易潮解，易容于水硫服化合物:鉑族金屬都能與硫際或苯基硫睬形成穩(wěn)定而有成的絡(luò)合物。在酸性溶液中，或者在加熱情況下，硫腺與費(fèi)金屬形成的絡(luò)合物被分解生成難溶性的硫化物。用該法可使鉑族金屬利其它賤金屬分離。
此外，鉑族金屬同氨能形成穩(wěn)定的絡(luò)合物。
Important compounds of platinum group metals in pump industry
Halide: all finely powdered platinum group metals react with chlorine when heated to form volatile halides under certain conditions. Halides of platinum group metals play an important role in the chemical analysis of this element.
Oxides and hydroxides: oxides and hydroxides of platinum group metals occupy a certain position in the chemical analysis of these elements. The oxides of iridium, osmium and ruthenium have high volatility, which can be used to separate them from other metals.
Sulfates and sulfites: sulfates and sulfites of platinum group metals are easy to hydrolyze. In solution, there are often unstable hydrated ions, stable polymer based compounds and complex polyhydrated sulfates.
Sulfide: the formation of metal sulfide is a common characteristic of platinum group metals, which occupies a certain position in chemical analysis. Their sulfides can be obtained by various methods, such as when hydrogen sulfide is introduced into the chloride solution of platinum group metals or when alkali metal sulfide is used for reaction, their corresponding sulfides can be obtained. Sulfide formation is widely used as a precipitant for platinum group metals to separate from other base metals. The order of the decrease of solubility of PGMS in water is irs8 > rh2sz > PTS2 > ruzs > OSS, > PDs. In complex nitric acid solution, iridium is not precipitated as sulfide, which can be used to separate from RHP and PD. I. at high temperature (about 3000), alkali gold sulfide interacts with sulfate of PGMS, and iridium and rhodium are no longer completely precipitated This allows iridium and rhodium to be separated from platinum. Slurry pump manufacturer
Nitrate: only palladium in platinum group metals can be directly dissolved by nitric acid to form corresponding nitrate, which is easy to deliquesce when crystallized into paono, and easy to be contained in water sulfur suit compound: platinum group metals can form stable and formed complex with sulfur or phenylsulfur. In acid solution, or under heating, the complex formed by sulfur gland and ferrous metal is decomposed to form insoluble sulfide. The platinum group metals can be separated from other base metals by this method.
In addition, platinum group metals can form stable complexes with ammonia.
