122results about How to "Stable reaction conditions" patented technology

The invention discloses a manganese oxide adsorbent and a preparation method thereof. The manganese oxide adsorbent comprises the following components in parts by weight; 100-150 parts of powder containing manganese oxide and 25-30 parts of binding agent, wherein the powder containing manganese oxide is composed of a manganese-containing compound and a lithium-containing compound in a weight ratio of (1:1)-(1:3). The preparation method comprises the steps of: 1, uniformly mixing the manganese-containing compound with the lithium-containing compound, heating to 100-200 DEG C and carrying out temperature preservation for 24-48 hours; 2, cooling the mixture to the room temperature, drying at the temperature of 60-100 DEG C, and then carrying out the temperature preservation for 5-8 hours at the temperature of 400-600 DEG C so as to obtain the powder containing manganese oxide; 3, uniformly mixing 100-150 parts of powder containing manganese oxide in the step 2 with 25-30 parts of binding agent; 4, carrying out extrusion forming or centrifugal forming on the obtained uniform mixture; and 5, dripping the formed material in ethanol or a solution of the ethanol and deionized water to obtain the manganese oxide adsorbent. The manganese oxide adsorbent disclosed by the invention is high in extraction efficiency and long in service life; and the preparation method is easy to implement, convenient, safe and low in energy consumption.

The invention discloses a production process of medicinal phloroglucinol, and belongs to the field of medicine chemical industry. The production process comprises the following steps of: uniformly mixing 1,3,5-trimethoxy benzene with concentrated hydrochloric acid, adding phosphoric acid, and adding a catalyst; stirring for 2-4 hours at room temperature; adding in an ice bath, adding Na2CO3 in different batches while stirring; regulating the pH value to 2-3; filtering; extracting a filtrate for three times by methyl tert-butyl ether; combining the extracting liquids; recovering the methyl tert-butyl ether to obtain a yellow solid, namely coarse phloroglucinol; adding proper amount of pure water into the coarse product to dissolve the coarse product; heating to 80 DEG C, stirring to dissolve the coarse product; adding 0.50% of active carbon, preserving the heat for 45minutes; filtering by a filter membrane of 0.45 microns, and filtering a filtrate by a hollow fiber; and cooling the obtained filtrate to room temperature, crystallizing for 4hours, centrifuging, reserving a white crystal substance, and drying the white crystal substance under a vacuum environment to obtain the product. The production process disclosed by the invention is simple in process, low in cost, high in yield being greater than 85% and high in product purity being greater than 99.8%.

The invention discloses a chemiluminescence immunoassay system, as well as a method and an application thereof. The chemiluminescence immunoassay system comprises a fluid control unit as well as a three-dimensional motion sample feeding platform, a temperature control unit, a magnetic field control module and an optical detecting module, wherein the three-dimensional motion sample feeding platform, the temperature control unit, the magnetic field control module and the optical detecting module are connected with each other in sequence; and the fluid control unit is connected with the temperature control unit. The chemiluminescence immunoassay system disclosed by the invention has the advantages as follows: with a capillary tube as a reactor, reagent transportation and reaction are both carried out in a water-in-oil type liquid drop by using a capillary tube liquid drop technology, so that a stable reaction condition is kept, and crossed pollution between samples and reaction suppression caused by surface adsorption are effectively avoided. The chemiluminescence immunoassay system disclosed by the invention has the advantages of small size, high assay speed, high testing flux, automatic operation and flexibility in application and is suitable for analyzing single sample, batch samples and field rapid assay; medical demands of the masses can be preferably satisfied; meanwhile, the purchasing and operation cost of equipment is obviously reduced, and excellent social and economic benefits are obtained.