Yanhuang Academy.
In the conference room of Guanghua Building, Wang Ji's face was full of excitement. He dragged Li Zexuan to the workshop, completely forgetting that he just wanted to "deal with" Li Zexuan as soon as possible before going back to memorize the "Confidentiality Regulations."
As the team leader of the Chemistry Department, Wang Ji has studied the several "Chemistry" textbooks compiled by Li Zexuan most thoroughly. No one understands the important role of sulfuric acid better than him. It can be said that a considerable part of the "Chemistry" textbooks written by Li Zexuan contain a lot of chemistry information. The reactions are all directly or indirectly related to sulfuric acid.
As early as last year, Wang Ji used green vitriol to produce dilute sulfuric acid through his own exploration. However, that method can produce dilute sulfuric acid in small amounts, but if you want to produce sulfuric acid or concentrated sulfuric acid in large quantities, it is obviously not possible!
Later, Li Zexuan introduced him to the method of heating sulfur dioxide in the air with vanadium pentoxide as a catalyst to generate sulfur trioxide, and then producing concentrated sulfuric acid. He had been looking forward to Li Zexuan quickly finding the legendary vanadium ore, but he didn't. Thinking of this, it will be four months!
Now that he has finally received the vanadium mine, how can he not be excited
Under Wang Ji's urging, the two quickly arrived at the iron smelting plant of the workshop.
But at this time, Wang Ji was a little confused, because he didn't know how to extract vanadium from vanadium-titanium magnetite!
So Wang Ji looked at Li Zexuan and asked: "Chief Mountain, how should we refine this ore to extract the vanadium in it?"
Li Zexuan was actually thinking about this issue on the way here. When he heard this, he replied in a deep voice:
"This vanadium-titanium magnetite mainly contains oxides of iron, vanadium, titanium, chromium, cobalt and other metals. We can put it into an iron-making blast furnace, mix it with soda ash for roasting, and bake it with sodium salt at high temperatures. Under the action of as an additive, the vanadium-containing silicon-oxygen tetrahedron and silicon-oxygen tetrahedron lattice structure in vanadium-titanium magnetite will be destroyed, and the vanadium will be exposed and transformed into pentavalent vanadium;
Afterwards, 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, and then filter out the impurities, from Refined vanadium salt precipitates in the solution! The refined vanadium salt is then precipitated and calcined to obtain the catalyst we need, vanadium pentoxide! "
The method he mentioned is called the salt roasting vanadium extraction process in modern times. It is a relatively primitive method of vanadium extraction. The sodium salt can be selected from soda ash (sodium carbonate), sodium sulfate or table salt (chlorinated salt). Sodium), in comparison, sodium chloride has the best roasting effect, but sodium chloride will undergo an oxidation-reduction reaction at high temperatures to generate chlorine gas, which seriously pollutes the atmosphere, so Li Zexuan did not choose this option!
In addition, the main advantage of adding sodium carbonate for roasting is that the equipment required is simple and the raw materials required are readily available, such as soda ash. Although no one could synthesize this artificially in ancient times, there is a lot of soda ash in nature.
However, the disadvantage of this method is also obvious, that is waste! Because the main product of this scheme is vanadium pentoxide, other metal components such as iron, titanium, chromium, cobalt and other metal components are directly filtered out as residues, especially iron. You must know the iron content of vanadium titanium magnetite As high as 20 to 30 percent, while the vanadium content is less than 2 percent!
Therefore, this method of extracting vanadium is a huge waste of iron, but Li Zexuan doesn't care about this now. What he needs is vanadium, not iron!
Wang Ji can be considered to have a good foundation in chemistry now, but after listening to Li Zexuan's theory of vanadium extraction technology, he still couldn't keep up. He waited in place for a long time, finally came to some sense, and then nodded. : "Since the mountain chief has a way, then Wang will do it! But I also ask the mountain chief to provide guidance~!"
An old man in his forties or fifties asked a teenage boy for guidance. This scene seemed strange, but Wang Ji's tone when he said this was natural and there was nothing awkward about it!
A master is a teacher, but he thinks he is far inferior to Li Zexuan in chemistry!
"Yeah! Okay! Let's get started~!"
Li Zexuan nodded and said.
… … … … … … …
Li Zexuan was immersed in scientific research here. In Chang'an City, in the palace, Lao Li, who had gone to court early in the morning, was enjoying tea with his family in the garden of Xiyuan.
He is now completely in love with the taste of fairy tea!
If someone were to bring him a cup of the same tea soup as before, he would definitely have it poured directly! Because compared with this fairy tea, the previous tea soup was simply garbage!
In addition, Lao Li deeply remembered that when Li Zexuan sent him the fairy tea that day, he also sent him a note. The note clearly said, "Drinking it can refresh you, reduce fatigue, and help digestion." ", delay aging", yes, he valued those four words "slowing down aging"!
Last year, when Li Er asked Li Zexuan if there was a way to immortality in the world, Li Zexuan refuted him mercilessly, so it was hard for him to ask Li Zexuan now whether the fairy tea could really delay aging, but he believed that such a thing Li Zexuan would definitely not tell nonsense, so he chose to believe it! What's more, the fairy tea itself tastes so good, why wouldn't he like drinking it
In fact, drinking tea can delay aging. Li Zexuan really did not lie to Li Er. Because the tea polyphenols in tea have inhibitory effects on various oxidative enzymes, they can effectively scavenge free radicals and are the fastest antioxidant pathway. They can also inhibit the production of free radicals and activate the body's antioxidant enzyme system; research It shows that the antioxidant properties of tea polyphenols are significantly better than vitamin E, the anti-aging effect is 18 times stronger than vitamin E, and it has a synergistic effect with vitamins C and E.
But if he wants to rely on tea for longevity, then Li Zexuan can only tell Lao Li, "You are thinking too much." If this tea is really so harmful, wouldn't all those who sell tea in modern times become rich
"Haha! Maid Guanyin, you think Li Zexuan is so bold that he actually named this tea Immortal Tea?"
Li Er took a sip of tea and said happily.
Empress Changsun smiled and said: "The tea soup brewed from this tea leaves is clear in color and smooth in taste. When you drink it, the fragrance of tea is lingering in your mouth. Moreover, drinking this tea soup can reduce fatigue and delay aging. With these, I think It’s no exaggeration to call it fairy tea!”
Li Er smiled and couldn't deny it.
Concubine Yin, who was sitting opposite him, had her eyes lit up, and she quickly asked Empress Changsun: "Sister, can this fairy tea really delay aging?"
Women love beauty, especially women in the harem. Who doesn’t want to be young and beautiful forever
Empress Changsun smiled faintly and said: "This is just what I heard from Marquis Yong'an. Whether my sister believes it or not, it's up to you!"
Concubine Yin smiled and said: "Yong'an Marquis is young and has both civil and military skills. Since he said so, he is definitely not lying. I just don't know when he will be able to supply a large amount of his fairy tea to the palace!"
Chang Le, who was next to him, smiled and said: "After Brother Xiaoxuan supplies the fairy tea to the palace, Chang Le will definitely drink tea every day!"
Li Chengqian said speechlessly: "How old are you, Changle, to think about delaying aging?"
Li Er also looked at his daughter with a funny and doting look on his face.
Chang Le smiled sweetly and said, "Chang Le doesn't want to grow up so that he can always be with his father, queen mother, and prince brother!"
As soon as these words came out, everyone was laughing. For a moment, the garden felt very warm.
After a while, Zhao Song came over and said a few words in Li Er's ear. Li Er's eyes flashed, then he stood up and said: "I have some things to deal with, Changle and Chengqian, you are so lucky to have a drink with your mother." Tea!"
"Yes! Father!"
Changle and Li Chengqian quickly stood up to respond.
Li Er nodded and took Zhao Song out of Xiyuan.
"Li Zexuan's servants came back from the land of Bashu, right? You said they look very embarrassed?"
After leaving Xiyuan, Li Er asked aloud as he walked.
Zhao Song bowed slightly and said: "Yes, Your Majesty! At the beginning of the year, Marquis Yong'an sent his servant to look for minerals in Shu. There are many people who know about this matter. This morning his servant returned with a few sergeants. When I arrived at Lantian, I was dressed in rags and very embarrassed!"
Li Er frowned and said, "Did they meet robbers on the road? Or did they encounter an accident in Shu? But if they hold Li Zexuan's fish charm, what mishaps can they encounter in Shu? Could it be that the situation in Bashu has changed?"
Thinking of this, Li Er's face became extremely serious. After all, Datang had just experienced a rebellion, so he couldn't help but be careless!
Zhao Song's face darkened and he did not dare to answer.
Li Er continued to ask: "Where is Li Zexuan now? His subordinates have been wronged like this, how can he still sit still?"
Zhao Song replied: "Your Majesty, Marquis Yong'an is in the workshop right now, presumably refining the ore brought back by his servants!"
"oh!"
Li Er couldn't help but breathe a sigh of relief, because if there was really a situation in Bashu, Li Zexuan would come to the palace to report the military situation to him as soon as possible, instead of going to the workshop to refine the ore. Li Zexuan is a person who knows priorities.
"Okay! Go down! That boy will definitely come to the palace to find me!"
Li Er waved his hand and smiled.
… … … … … …
the other side.
After nearly three hours of hard work, Li Zexuan finally obtained the gray-black flake-shaped vanadium pentoxide!
"Chief Shan, is this the catalyst we need, vanadium pentoxide?"
At this time, Li Zexuan and Wang Ji had already put on "masks." Wang Ji pointed at a group of gray-black flake objects and asked.
Li Zexuan grabbed Wang Ji's hand and said: "Don't touch it with your hands. This thing will not only damage the respiratory tract, but also the skin. Go put on rubber gloves and put them into the bottle! This thing is basically OK We are sure it is the vanadium pentoxide we need. We will do the rest of the experiments later. I have to go to the palace now!"
… … … … (To be continued)