摘要:
A process has been disclosed for preparation of hydrobromic acid from bromine, sulfur dioxide and water, which involves in situ generation of bromine from bittern for the production of hydrobromic acid and separation thereof from co-products, viz., sulfuric and hydrochloric acids. The invented process obviates the need for double distillation or precipitation step for removal of sulfate impurities. The concentration of the product obtained by the invented process is about 48% and it contains
摘要:
An object of the invention is to provide a jig electrolytic stripper that can sufficiently remove palladium adhered to the current-conducting portion of a plating jig, that can remove palladium adhered to the insulating-material-coated portion of the jig, and that exhibits reduced erosion of the metal of the current-conducting portion of the jig. The jig electrolytic stripper comprises the following components (A) to (C): (A) at least one member selected from the group consisting of nitric acid and salts thereof, (B) at least one member selected from the group consisting of ammonia, ammonium salts, ethylene amine compounds, alkyl diamine compounds, and amino acids, and (C) a bromide.
摘要:
Stabilized bromine solutions are prepared by combining a bromine source and a stabilizer to form a mixture, adding an oxidizer to the mixture, and then adding an alkaline source to adjust the pH of the mixture to at least 13.
摘要:
A method comprising: providing a first halogen stream; providing a first alkane stream; reacting at least a portion of the first halogen stream with at least a portion of the first alkane stream in a first reaction vessel to form a first halogenated stream; providing a second alkane stream comprising C 2 and higher hydrocarbons; providing a second halogen stream; and reacting at least a portion of the second halogen stream with at least a portion of the second alkane stream in a second reaction vessel to form a second halogenated stream.
摘要:
A method comprising: providing a first halogen stream; providing a first alkane stream; reacting at least a portion of the first halogen stream with at least a portion of the first alkane stream in a first reaction vessel to form a first halogenated stream; providing a second alkane stream comprising C 2 and higher hydrocarbons; providing a second halogen stream; and reacting at least a portion of the second halogen stream with at least a portion of the second alkane stream in a second reaction vessel to form a second halogenated stream.
摘要:
A method comprising: providing a first halogen stream; providing a first alkane stream; reacting at least a portion of the first halogen stream with at least a portion of the first alkane stream in a first reaction vessel to form a first halogenated stream; providing a second alkane stream comprising C 2 and higher hydrocarbons; providing a second halogen stream; and reacting at least a portion of the second halogen stream with at least a portion of the second alkane stream in a second reaction vessel to form a second halogenated stream.