E boetse e tsejoa e le dimethylaniline, e se nang 'mala ho isa ho mosehla o nang le oli e mokelikeli, monko o hlabang, moeeng kapa tlas'a letsatsi oxidation e bonolo ea Ze eba botebo. Relative density (20 ℃/4℃) 0.9555, freezing point 2.0℃, boiling point 193℃, flash point (opening) 77℃, ignition point 317℃, viscosity (25℃) 1.520 MPA4.528 MPa4. . E qhibiliha ka har'a ethanol, ether, chloroform, benzene le metsoako e meng ea tlhaho. E ka qhala mefuta e fapaneng ea metsoako ea manyolo. E qhibiliha hanyane ka metsing. E ka tukang, e tla chesa mollong o bulehileng, mouoane le moea ho etsa motsoako o phatlohang, moeli o phatlohang oa 1.2% ~ 7.0% (vol). Chefo e phahameng, ho bola ha mocheso o phahameng oa ho lokolloa ha khase ea aniline e chefo. E ka kenngoa ka letlalo le chefo, LD501410mg/kg, tekanyo e phahameng e lumelletsoeng moeeng ke 5mg/m3.

Mekhoa ea ho boloka

1. Lintlha tsa Polokelo [25] Boloka sebakeng sa polokelo se pholileng se nang le moea o pholileng. Ipolokele hole le mollo le mocheso. Boloka setshelo se tiisitsoe. E lokela ho bolokoa ka thoko ho acid, halogens le lik'hemik'hale tsa lijo, 'me ha ea lokela ho tsoakoa. Hlomella ka mefuta e fapaneng le bongata ba lisebelisoa tsa ho tima mollo. Sebaka sa polokelo se lokela ho ba le lisebelisoa tsa phekolo ea tšohanyetso tse lutlang le lisebelisoa tse loketseng tsa polokelo.

2. E tiisitsoe ka moqomo oa tšepe, 180kg ka barele. Boloka sebakeng se phodileng le se nang le moya. Boloka le ho tsamaisa ho latela melaoana ea lintho tse tukang le tse chefo

Mekhoa ea maiketsetso

1. Ka aniline le methanol boteng ba sulfuric acid, ka mocheso o phahameng le karabelo e phahameng ea khatello. Phallo ea ts'ebetso: 1. Eketsa 790kg ea aniline, 625kg ea methanol le 85kg ea sulfuric acid (100% ea ammonium) ho reactor, laola mocheso oa 210-215 ℃ le khatello ea 3.1MPa, itšoara bakeng sa 4h, ebe u lokolla khatello, Lahlela thepa ho karohano, neutralize ka 30% sodium hydroxide, ema, 'me arola ka tlaase quaternary ammonium letsoai. Ebe karabelo ea hydrolysis ho 160 ℃, 0.7-0.9MPa bakeng sa 3h, sephetho sa hydrolyzate le oli e kaholimo li kopantsoe le ho hlatsoa metsi le vacuum distillation ho fumana sehlahisoa se felileng.

2, ka methanol le aniline e le lisebelisoa tse tala, tlas'a maemo a methanol e feteletseng, khatello ea sepakapaka, 200-250 ℃, ka motsoako oa alumina catalyst. Tekanyo ea tšebeliso ea thepa e tala: aniline 790kg/t, methanol 625kg/t, sulfuric acid 85kg/t. Tokisetso ea laboratori e ka sebetsana le aniline ka trimethyl phosphate.

3. Aniline e tsoakiloeng le methanol (N aniline: N methanol ≈ 1: 3) 'me e kenngoa ka har'a mochine o nang le lisebelisoa tse nang le li-catalyst ka lebelo la sebaka sa 0.5h-1 ka pompo ea metering e sa phekoleheng. Mokelikeli o tsoang ka har'a mokelikeli o kenang ka har'a mokelikeli oa gase o qala ka khalase, 'me mokelikeli o bokelloang karolong e ka tlaase ea karohano o ntšoa khafetsa bakeng sa tlhahlobo ea chromatographic.

4. Ka 2001, Univesithi ea Nankai le Tianjin Ruikai Science and Technology Development Co., Ltd ka kopanelo e ile ea theha aniline methylation catalyst e sebetsang hantle haholo ho hlokomela motsoako oa khase ea N, N-dimethylaniline. Ts'ebetso e tjena: Ka mor'a hore aniline ea metsi e kopane le methanol ka tekanyo, e kenngoa mouoane ka har'a tora ea mouoane ebe e kenngoa ka har'a mochine o motlakase o nang le lebelo la sebaka sa 0.5-1.0h-1 (bethe e tsitsitseng ea mochine o motlakase oa tubular. e na le nanometer solid catalyst e tšehetsoeng) bakeng sa tlhahiso e tsoelang pele ho 250-300 ℃ le khatello ea sepakapaka. Lihlahisoa tsa DMA li ka holimo ho 96%.

Mokhoa oa ho hloekisa: hangata o na le aniline, N-methyl aniline le litšila tse ling. Nakong ea ho hloekisoa, N, N-dimethylaniline e qhibiliha ka 40% ea sulfuric acid 'me ho etsoa distillation ea mouoane. Sodium hydroxide e eketsoa ho e etsa ea mantlha. The distillation mouoane tsoela pele. Distillate e arotsoe ka lera le nang le metsi 'me e omisitsoe ka potassium hydroxide. Distillation ka khatello ea sepakapaka ka boteng ba acetic anhydride. Distillate e ne e hlatsuoa ka metsi ho tlosa trace amount of acetic anhydride, ebe e omisoa ka potassium hydroxide, e lateloe ke barium oxide le decompressed distillation ka nitrogen stream. Mekhoa e meng ea ho hloekisa e kenyelletsa ho eketsa 10% acetic anhydride le reflux ka lihora tse 'maloa ho tlosa li-amine tsa mantlha le tsa bobeli. Kamora ho pholile, eketsa 20% ea hydrochloric acid 'me u ntše ka ether. Lera la hydrochloric acid le entsoe alkaline ka ho eketsa alkali, ebe le ntšoa ka ether. Lera la ether le ne le omisitsoe ka hydroxide ea potasiamo 'me la hloekisoa tlas'a khatello tlas'a naetrojene. N, N-dimethylaniline e ka boela ea fetoloa ho picronate, ea tsosolosoa ho ea sebakeng se tsitsitseng sa ho qhibiliha ka metsi a futhumetseng a 10% a sodium hydroxide ho senya picronate. Ntša ka ether, hlatsoa ka metsi 'me u omelle ka mor'a vacuum distillation.

5. Aniline, methanol le sulfuric acid li kopantsoe ka ho lekana 'me li fokotsehile ka autoclave. Kamora hore sehlahisoa sa karabelo se hlaphoheloe ke khatello ea khatello, alkali e eketsoa bakeng sa ho se nke lehlakore, karohano, ebe sehlahisoa se fumanoa ka vacuum distillation.

6. Tsela ea methylation ea aniline le trimethyl phosphate e ka hlahisa N, N-dimethylaniline: ebe e ntšoa ka ether, distillation e omeletseng.

7. N, N-dimethylaniline e ka etsoa ka ho eketsa motsoako oa aniline le methanol ka karolelano ea 1∶ 3.5 betheng ea catalytic ea Cu-Mn kapa Cu-Zn-Cr Ziegler catalyst ho 280 ℃. Sephetho sa N, N-dimethylaniline se bokelloa ka har'a yuniti ea distillation ea lipoleiti tse 54 ho tloha ho 193 ho isa ho 195 ℃ 'me li kenngoa ka libotlolong tsa khalase e sootho. Bakeng sa ho lokisetsa chromatography hloekileng N, N-dimethylaniline, naetrojene e ka ba mosireletsi khase, ka ho lokisetsa khase chromatography le Ben 犅 yaku kholomo ente e lokisoang ea N, N-dimethylaniline, ka karohano le pokello ea ka sehloohong karolo tlhōrō karoloana, 'me joale ka khalase ampoule tiiso e ka ba.

Sepheo se seholo

1. E 'ngoe ea lisebelisoa tsa motheo tsa tlhahiso ea lidae tsa motheo tsa letsoai (lidae tsa triphenyl methane, joalo-joalo) le lidae tsa motheo, mefuta e ka sehloohong ke alkaline e khanyang mosehla, alkaline pherese 5GN, botala ba alkaline, letša la alkaline le leputsoa, ​​​​5GN e khubelu e khanyang, boputsoa bo khanyang, joalo-joalo N, N-dimethylaniline indastering ea meriana bakeng sa tlhahiso ea cephalosporin V, sulfamilamide B-methoxymidine, sulfamilamide dimethoxymidine, fluorouracil, joalo-joalo, indastering ea monko oa ho etsa vanillin, joalo-joalo. solvent, metal preservative, pheko agent ea epoxy resin, folisa accelerator ea polyester resin, catalyst bakeng sa polymerization ea metsoako ea ethylene, joalo-joalo E boetse e sebelisoa ha ho lokisoa lidae tsa mantlha tsa triphenyl methane, dae le azonellin. 3. Sehlahisoa sena se sebelisoa e le mohloli oa ho etsa lipolasetiki tsa polyurethane foam tse nang le metsoako ea organic tin. E boetse e sebelisoa e le rabara vulcanization accelerator, liqhomane, thepa e tala ea meriana. Ke e 'ngoe ea lisebelisoa tsa motheo tsa tlhahiso ea li-dae tse thehiloeng motheong (li-triphenyl methane dyes, joalo-joalo) le li-dae tsa motheo. Mefuta e ka sehloohong ke ea motheo e mosehla o khanyang, oa motheo oa pherese oa BN, o motala oa motheo, oa motheo oa letša le leputsoa, ​​​​5GN e khubelu e khanyang, o moputsoa o khanyang, joalo-joalo N, N-dimethylaniline indastering ea meriana bakeng sa tlhahiso ea cephalosporin V, sulfamilamide N- methoxymidine, sulfamilamide. - dimethoxymidine, fluorouracil, joalo-joalo, indastering ea monko o monate bakeng sa ho etsa vanillin, joalo-joalo 4. E sebelisoa e le ho phekola accelerator ea epoxy resin, resin ea polyester le sekhomaretsi sa anaerobic, e le hore sekhomaretsi sa anaerobic se ka phekoloa ka potlako. E ka boela ea sebelisoa e le solvent, catalyst for polymerization of ethylene compounds, metal preservative, an ultraviolet absorber for cosmetics, sensitizer e khanyang, joalo-joalo E boetse e sebelisoa ha ho etsoa lidae tsa motheo, li-dae tse qhalakang, li-dae tsa acid, oli. lidae le linoko tse qhibilihang (vanillin) le lisebelisoa tse ling tse tala. 5. Reagent e sebelisetsoang qeto ea photometric ea nitrite. E boetse e sebelisoa e le solvent le ho organic synthesis. 6. E sebelisoa e le dae e bohareng, solvent, stabilizer, analytical reagent.