Abstract: Manganese phosphate is prepared by reacting pyrophosphoric acid with an oxide containing tetravalent manganese, trivalent manganese, or divalent manganese to obtain a manganese pyrophosphate complex solution, followed by decomplexation to obtain a manganese phosphate precipitate. A carbon-coated lithium manganese iron phosphate material is prepared using manganese phosphate as a lithium battery material.

Abstract: A method for preparing unrefined sustainable aviation fuel (SAF) includes: adding a catalyst to a reaction kettle, then adding a polyol solution to fill the reaction kettle; sealing the reaction kettle, introducing gas into the reaction kettle to discharge excess polyol solution and replace the atmosphere in the reaction kettle; stirring thoroughly to mix the catalyst uniformly with the polyol solution; then continuing to introduce gas into the reaction kettle to increase the internal pressure; subsequently conducting the reaction, and after the reaction is completed, collecting the upper liquid product to obtain unrefined SAF. The invention employs a one-pot method to prepare unrefined SAF, utilizing the interaction between polyols and solvents to provide H2 for the system, thereby achieving carbon chain growth and hydrodeoxygenation without the need for high-pressure H2.

Abstract: Disclosed is a method for preparing iron phosphate dihydrate by decomplexing an iron phosphate complex. The method comprises: in an iron phosphate complex solution, adding water of 0.3-30 times, preferably 0.3-8 times the volume of the complex solution; reacting for 1 min to 20 h, preferably 10 min to 6 h; and separating the solid and liquid phases to give solid iron phosphate dihydrate. The method provided by the present invention can be used for simple, efficient, and environment-friendly preparation of iron phosphate of high purity as a positive electrode material for lithium batteries.

Abstract: A method for synthesizing and application embedded alkaline earth metal oxide solid alkali includes: firstly, synthesizing an alkaline earth metal organic skeleton with single or multiple alkaline earth metals (Mg, Ca and Sr) as central metal elements; and then controlling the heating process to carry out high-temperature pyrolysis in a non-oxidizing atmosphere, so that the alkaline earth metal oxide are embedded in the nano carbon sheet to obtain a solid alkali catalyst. Finally, the catalyst is used to catalyze the transesterification of palm oil and methanol to produce biodiesel. The active site of the solid alkali obtained by the method is anchored on the nano-like carbon sheet, so that the active site is directly exposed on the surface of the catalyst, the catalytic activity is improved, the loss of the active site is inhibited, and the stability of the solid alkali catalyst is enhanced.

Abstract: A method for synthesizing and application embedded alkaline earth metal oxide solid alkali includes: firstly, synthesizing an alkaline earth metal organic skeleton with single or multiple alkaline earth metals (Mg, Ca and Sr) as central metal elements; and then controlling the heating process to carry out high-temperature pyrolysis in a non-oxidizing atmosphere, so that the alkaline earth metal oxide are embedded in the nano carbon sheet to obtain a solid alkali catalyst. Finally, the catalyst is used to catalyze the transesterification of palm oil and methanol to produce biodiesel. The active site of the solid alkali obtained by the method is anchored on the nano-like carbon sheet, so that the active site is directly exposed on the surface of the catalyst, the catalytic activity is improved, the loss of the active site is inhibited, and the stability of the solid alkali catalyst is enhanced.