Yan Huang Academy.

In the conference room of Guanghua Building, Wang Ji's face was full of excitement, and he pulled Li Zexuan to go to the workshop, completely forgetting that he wanted to "deal with" Li Zexuan as soon as possible and went back to memorize the "Secrecy Regulations".

As the head of the chemistry department, Wang Ji has studied several "Chemistry" textbooks compiled by Li Zexuan most thoroughly, and no one understands the important role of sulfuric acid better than him.

As early as last year, Wang Ji used green alum to make dilute sulfuric acid through his own exploration, but that method can produce dilute sulfuric acid in small quantities, if you want to make a large amount of sulfuric acid or concentrated sulfuric acid, it is obviously not possible!

Later, Li Zexuan introduced to him the method of using sulfur dioxide as a catalyst with vanadium pentoxide as a catalyst and heating it in the air to generate sulfur trioxide, and then producing concentrated sulfuric acid.

Now that he has finally waited for the vanadium mine, how can he not be excited?

At the urging of Wang Ji, the two soon came to the ironworks of the workshop.

But at this time, Wang Ji was a little confused, because he didn't know how to extract vanadium from vanadium titanomagnetite!

So Wang Ji looked at Li Zexuan and asked, "Mountain Chief, how should this ore be refined in order to extract the vanadium in it~?" ”

Li Zexuan was actually thinking about this problem on the way here, and when he heard this, he replied in a deep voice:

"This vanadium titanomagnetite mainly contains oxides of iron, vanadium, titanium, chromium, cobalt and other metals, we can put it into the blast furnace of ironmaking, mix it with soda ash for roasting, under the action of high temperature and sodium salt as additives, the crystal lattice structure of vanadium-containing silicon-oxygen tetrahedra and silicon-oxygen tetrahedron in vanadium titanomagnetite will be destroyed, and vanadium can be exposed and transformed into pentavalent vanadium;

After that, the sodium ions in the soda ash react with it, and the sodium vanadate salt generated can be dissolved in water, while the residues of other impurity metals are insoluble in water, so we can hydrolyze the crude vanadium by water immersion method, and then filter out the impurities and precipitate the refined vanadium salt from the solution! After precipitation and calcination, the refined vanadium salt can obtain the catalyst vanadium pentoxide we need! ”

He said that this set of methods in modern times is called salt roasting vanadium extraction process, which is a relatively primitive vanadium extraction method, in which the selection of sodium salt can be soda ash (sodium carbonate), sodium sulfate or salt (sodium chloride), in comparison, sodium chloride roasting effect is the best, but sodium chloride will undergo redox reaction at high temperature to produce chlorine gas, which seriously pollutes the atmosphere, so Li Zexuan did not choose this plan!

In addition, the main advantage of this scheme of sodium carbonate roasting is that the required equipment is simple, and the raw materials required are also ready-made, such as soda ash, although no one can synthesize this thing in ancient times, but there are many soda ash in nature.

However, the disadvantage of this method is also obvious, and that is waste! Because the main product of this scheme is vanadium pentoxide, like the rest of the metal iron, titanium, chromium, cobalt and other metal components are directly filtered out as residue, especially iron, you must know that the iron content of vanadium titanomagnetite is as high as 20% to 30%, and the content of vanadium is less than 2%!

So this method of extracting vanadium is a great waste for iron, but Li Zexuan doesn't care about this now, what he needs is vanadium, not iron!

Wang Ji now has a good chemical foundation, but listening to Li Zexuan's theory of vanadium extraction, he still can't keep up, he slowed down in place for a long time, and finally reacted a little, and then nodded and said: "Since the mountain chief has a way, then Wang will do it!" But please also ask the mountain chief to guide on the side~! ”

An old man of forty or fifty years old, but asked a young man in his teens for guidance, this meeting, how strange it looks, but Wang Ji's tone when he said this was a matter of course, and there was nothing awkward!

The master is a teacher, and he thinks that he is far inferior to Li Zexuan in chemistry!

"Hmmm! Good! So let's get started~! ”

Li Zexuan nodded and said.

…………………………………

Li Zexuan is immersed in scientific research here, in Chang'an City, in the palace, Lao Li, who was under the early dynasty, is drinking tea with his family in the garden of Xiyuan.

He is now completely in love with the taste of fairy tea!

If someone brought him a cup of tea soup from before, he would definitely let people pour it directly! Because the previous tea soup is simply garbage compared to this fairy tea!

In addition, Lao Li deeply remembered that when Li Zexuan brought him fairy tea that day, he also sent him a note, on which it was clearly written "Drinking it can invigorate and refresh, reduce fatigue, help digestion, and delay aging", yes, he valued the words "delay aging"!

Last year, when Li Er asked Li Zexuan if there was a way to live forever in the world, Li Zexuan refuted him mercilessly, so it was not easy for him to ask Li Zexuan now if the fairy tea could really delay aging, but he believed that Li Zexuan would definitely not talk nonsense about this kind of thing, so he chose to believe it! What's more, the taste of the fairy tea itself is so great, what reason does he have not to like to drink it?

In fact, drinking tea can delay aging, this Li Zexuan really didn't lie to Li Er. Because the tea polyphenols in tea have an inhibitory effect on various oxidative enzymes, they can efficiently scavenge free radicals, which is the fastest effective antioxidant pathway, and can inhibit the production of free radicals and activate the body's antioxidant enzyme system; Studies have shown that the antioxidant activity of tea polyphenols is significantly better than that of vitamin E, and the anti-aging effect is 18 times stronger than that of vitamin E, and it has a synergistic effect with vitamin C and E.

But if you want to rely on tea to live forever, then Li Zexuan can only say to Lao Li, "You think too much", if this tea is really so bad, then wouldn't all those people who sell tea in modern times become rich?

"Huh! Guanyin, you said that Li Zexuan's kid is really big-mouthed, and he actually named this tea tea fairy tea? ”

Li Er took a sip of tea and said comfortably.

Empress Eldest Sun said with a smile: "The tea soup brewed from this tea is clear in color, the taste is smooth, and the tea fragrance is endless, and this tea soup can also reduce fatigue and delay aging. ”

Li Er smiled, undeniable.

Concubine Yin, who was sitting opposite him, had bright eyes, and hurriedly asked Empress Eldest Sun, "Sister, can this fairy tea really delay aging?" ”

Women love beauty, especially women in this harem, who doesn't want to be able to stay forever?

Empress Eldest Sun smiled faintly: "It's just that this palace listened to what Yong'an Hou said, and my sister doesn't believe it, then it's up to you!" ”

Concubine Yin smiled: "Yong'an Hou is young, he is both civil and military, since he said so, there will definitely be no fake." I just don't know when his immortal tea will be able to supply it to the palace in large quantities! ”

Changle next to him smiled at this time: "After Brother Xiaoxuan supplies the fairy tea to the palace, Changle must drink tea every day!" ”

Li Chengqian said speechlessly: "Changle, how old are you, just thinking about delaying aging?" ”

Li Er also looked at his daughter with a funny and doting face.

Seeing Changle smile sweetly, he said: "Changle doesn't want to grow up, so he can always be by the side of his father, mother, and the prince's brother!" ”

As soon as these words came out, they immediately caused laughter from all sides, and for a while, this garden was not warm.

After a while, Zhao Song walked over, and then said a few words in Li Er's ear, Li Er's eyes flashed, and then he got up and said: "I have some things to deal with, Changle and Chengqian, you are good to accompany your queen mother to drink tea!" ”

"Yes! Father! ”

Changle and Li Chengqian hurriedly got up.

Li Er nodded, took Zhao Song, and walked out of the West Garden.

"Li Zexuan's servant came back from the land of Bashu, right? You say they look embarrassed? ”

Out of the West Garden, Li Er asked out loud as he walked.

Zhao Song bowed slightly and said, "Yes, Your Majesty!" At the beginning of the year, Yong'an Hou sent a servant to Shu to look for mines, there are not a few people who know about this matter, this morning the servant returned to Lantian with a few sergeants, dressed in rags, very embarrassed! ”

Li Er frowned and said, "They met robbers on the way?" Or did you encounter an accident in Shudi? But with Li Zexuan's fish talisman, what accidents can they encounter in Shudi? Could it be that the situation in Bashu has changed? ”

Thinking of this, Li Er's face became extremely grim, after all, Datang had just experienced a rebellion, so he couldn't be cautious!

Zhao Song's face sank, and he didn't dare to answer.

Li Er continued to ask, "Where is Li Zexuan now?" His subordinates have been wronged like this, can he still sit still? ”

Zhao Song replied: "Back to Your Majesty, Yong'an Hou is in the workshop at this time, presumably refining the ore brought back by the servant!" ”

"Oh!"

Li Er couldn't help but breathe a sigh of relief, because if there was really a situation in Bashu, Li Zexuan should come to the palace to report the military situation to him as soon as possible, instead of going to the workshop to refine ore. Li Zexuan is a person who knows priorities.

"That's it! Go down! That kid will definitely enter the palace to find me! ”

Li Er waved his hand and said with a smile.

……………………………

The other side.

After nearly three hours of hard refining, Li Zexuan finally got the gray-black flake vanadium pentoxide!

"Yamaga, this thing is the catalyst vanadium pentoxide we need?"

At this time, Li Zexuan and Wang Ji had already put on their "masks", Wang Ji pointed to a gray-black flaky object and asked.

Li Zexuan grabbed Wang Ji's hand and said, "Don't touch it with your hands, this thing is not only harmful to the respiratory tract, but also to the skin, go put on rubber gloves and put them in bottles!" This thing is almost certain to be the vanadium pentoxide we need, and the rest of the experiments will be done later, and I have to go to the palace now! ”

……………………

The second update!

Add 6/10 to the alliance leader's black and red plum side's 10,000 rewards

Deficit - 1 = 17

(End of chapter)