Lead nitrate, basic, preparation

Lead chromates are prepared by precipitation techniques from soluble salts ia aqueous media. The raw material Hst iacludes a number of different lead compounds, eg, Htharge, lead nitrate, basic lead acetate, basic lead carbonate, as well as acids, alkahes, sodium bichromate, and sodium chromate. The typical reaction can be represented by the foUowiag equation ... 

Normal lead styphnate (LS) [Structure (2.10)] was first reported by Von Herze in 1914, although its basic salt, that is, basic LS was prepared by Griess [7] way back in 1874, by the reaction of acidified magnesium styphnate with lead nitrate/acetate in hot aqueous solution. It is precipitated as mono hydrate and consists of reddish-brown rhombic crystals. It is filtered off, washed with water, sieved through a stainless steel sieve and dried. Like other initiatory explosives, it is kept in wet conditions until used. 

It is usually prepared by adding a solution of lead nitrate to one of magnesium styphnate. The latter is an easily soluble and weakly basic salt of trinitroresorcinate. The use of suitable salts and conditions (pH, temperature, rate and sequence in adding the raw materials) is of great importance, since unsuitable salts and condi-... 

Summary The basic yellow lead styphnate is prepared by precipitating the salt from a styphnic acid/sodium hydroxide solution with lead nitrate at 100 Celsius. The resulting precipitated lead styphnate is then collected by filtration, washed, and dried. Commercial Industrial note Part or parts of this laboratory process may be protected by international, and/or commercial/industrial processes. Before using this process to legally manufacture the mentioned explosive, with intent to sell, consult any protected commercial or industrial processes related to, similar to, or additional to, the process discussed in this procedure. This process may be used to legally prepare the mentioned explosive for laboratory, educational, or research purposes. 

To obtain the basic lead salt a solution of 3% sodium salt of XV containing 0.775% NaOH was prepared. The solution was poured into 7.5% solution of lead nitrate in a tilted reactor at 43- 44 C. The precipitated basic lead salt was collected, washed with water of 30-30 C, ethanol and kept as ethanol moistened product. The yield was a 78% based sodium salt of XV. 

Basic lead nitrate n. Pb(N03)2. Compound prepared in a similar manner to basic lead acetate, but nitric acid is used in place of... 

Substances analogous to basic lead azide having the assumed OH group replaced with a halogen have also been reported. One example of such substance is PbN3Cl which may be prepared from lead nitrate and azide/chloride mixtures. This substance has inferior explosive properties compared to normal lead azide. 

Basic 2,4-LDNR (mono-, tri-, and tetra-) are prepared from the corresponding equimolar amounts of the sodium salt of DNR and lead nitrate in a basic environment [14] ... 

Preparation of various basic salts is based on the reaction of either (a) lead nitrate in a basic environment (NaOH) or (b) freshly prepared lead hydroxide (precipitated from aqueous solutions of lead acetate and sodium hydroxide) with 4,6-dinitroresorcinol or its salts. 

The basic lead styphnate is prepared by reaction of the sodium or magnesium salt of 2,4,6-trinitroresorcine in an alkaline reaction medium with lead nitrate [8]. 

Alkaline earth oxides (AEO = MgO, CaO, and SrO) doped with 5 mol% Nd203 have been synthesised either by evaporation of nitrate solutions and decomposition, or by sol-gel method. The samples have been characterised by chemical analysis, specific surface area measurement, XRD, CO2-TPD, and FTIR spectroscopy. Their catalytic properties in propane oxidative dehydrogenation have been studied. According to detailed XRD analyses, solid solution formation took place, leading to structural defects which were agglomerated or dispersed, their relative amounts depending on the preparation procedure and on the alkaline-earth ion size match with Nd3+. Relationships between catalyst synthesis conditions, lattice defects, basicity of the solids and catalytic performance are discussed. 

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