-
Petroleum is a mixture of organic and inorganic substances, in which alkanes, olefins, aromatic hydrocarbons and their derivatives, lipids, ethers, and their derivatives are organic substances, while water, chlorides, sulfides, and other salts are not organic substances.
In addition, petroleum is one of the most important raw materials for industrial refining and organic compounding.
Organic and Inorganic ICPUC The International Society for the Application of Pure Chemistry also does not give a clear definition, because the difference between the two is very vague, for example, some nitrogen derivatives can be classified as both organic and inorganic, and the closest definition of organic matter is currently .
Compounds composed of c h o s n as the main element are organic substances. In addition, there is another characteristic definition: organic matter is the main compound that makes up living organisms, does not conduct electricity, and is mostly polymer.
But the latter definition has not been used in the past 20 years, because many organic substances can conduct electricity, such as polyacetylene, etc., Japanese scientists won the Nobel Prize for their contributions to conductive polymers, so there is no definite answer to your question in the international pure chemistry applied science, so I can't make an accurate one, if you are in middle school, then what the teacher said should be the standard definition (as you learn deeper, a lot of past knowledge will become imperfect in your opinion, which is normal)
-
Oil is, of course, organic pulling, which we just learned in class.
-
It doesn't belong. Organic compounds in the narrow sense are mainly composed of carbon and hydrogen, and are compounds that contain a certain amount of carbon. Whereas, a compound is a pure substance composed of atoms of two or more elements (referring to the atomic species of different elements).
Gasoline has an important physical property, that is, it is very easy to vaporize and highly volatile. Sometimes we can see with the naked eye that there is a layer of steaming mist on the surface of gasoline. 1 liter of gasoline can volatilize into 100 400 liters of vapor, which spreads into a large space.
Sometimes the ignition source seems to be far away from the gasoline, but contact with the gasoline vapor can still cause combustion.
The composition of gasoline is more complex, mainly alkanes, from C4 to C12, of which C5 to C9 are the main ones. The composition of various gasolines is different, so their physicochemical constants are also different, and there is a certain amplitude, such as: the boiling point is 40 200, the flash point is 58 10, and the specific gravity is, **The limit is about.
The ability of stable gasoline to resist oxidation under normal temperature and liquid phase conditions is called oxidative stability of gasoline, referred to as stability. The indicators to evaluate the stability of gasoline are divided into iodine value, actual gum content, and induction period.
Refers to the ability of gasoline to resist knock combustion under various conditions of use. The knock resistance of motor gasoline is expressed by the octane number. The higher the octane number, the better the knock resistance.
The magnitude of gasoline's anti-knock ability is related to the chemical composition. Branched alkanes, olefins, and aromatics generally have excellent knock resistance.
The octane number of isooctane is 100, and the knock resistance is good; The octane number of n-heptane is 0, and the knock resistance is poor. The octane number of gasoline is determined by the octane counting machine. High-octane gasoline can meet the needs of gasoline engines with high compression ratios.
The high compression ratio of the gasoline engine means that the thermal efficiency is high, which can save fuel. Increasing the octane number of gasoline is mainly achieved by increasing the composition of high-octane gasoline, but it is also achieved by adding antiknock agents such as MTBE. The grades of gasoline are classified by octane number.
-
It is a mixture of organic matter, a variety of olefins and alkanes.
-
Petroleum is mainly composed of carbon (C) and hydrogen (H) elements, carbon accounts for 83 87, hydrogen accounts for 10 14, the ratio of the two is the ratio of carbon to hydrogen, generally between; Oil also contains oxygen, nitrogen and sulfur, but their content generally does not exceed 1, and there are individual oil fields with sulfur content up to 3 4The above-mentioned elements are not in a free state in **, but exist in the form of different compounds, mostly hydrocarbon compounds, and a small amount of non-hydrocarbon compounds containing oxygen, sulfur and nitrogen. In general, ** contains sulfur, paraffin, gum and asphaltene.
**Hydrocarbons that are solid when the number of carbon atoms in alkanes is about 15 42 are called waxes. **The percentage of wax in is called wax content. Gum is a hydrocarbon with a large molecular weight, which has poor solubility and can only be dissolved in organic solvents such as petroleum ether, benzene, chloroform, ether and carbon tetrachloride, and can be adsorbed by silica gel.
Less dense petroleum generally contains gum4 5, while heavier petroleum gum content can reach 20 or higher. **The percentage of gum contained in it is called the gum content. Asphaltene is a brittle substance dark brown to black, which is a polymer polycyclic organic compound containing carbon, hydrogen, oxygen, nitrogen, sulfur and other elements, its molecular weight is many times larger than that of colloid, insoluble in petroleum ether or alcohol, soluble in benzene, chloroform and carbon disulfide, and can also be adsorbed by silica gel.
**The percentage of asphaltenes contained in it is called asphaltene content.
-
The main components of petroleum are: oil (this is its main component), gum (a viscous semi-solid substance), asphaltene (a dark brown or black brittle solid substance), and carbonaceous (a non-hydrocarbon). The chemical elements that make up petroleum are mainly carbon (83% 87%), hydrogen (11% 14%), and the rest are sulfur ( nitrogen ( oxygen ( and trace metal elements (nickel, vanadium, iron, etc.).
-
The chemical elements that make up petroleum are mainly carbon (83% 87%), hydrogen (11% 14%), and the rest are sulfur ( nitrogen ( oxygen ( and trace metal elements (nickel, vanadium, iron, etc.).
-
Petroleum mainly contains hydrocarbon elements and many other elements, which can be used to extract gasoline, diesel engine oil, liquefied gas, and finally asphalt.
-
Hail stool oil is a natural fluid hydrocarbon composed of organic and inorganic matter, and is a fossil fuel buried in sedimentary rock thousands of meters underground. The main components of petroleum are hydrocarbons, i.e. hydrocarbons, and some heteroatomic compounds, such as sulfur, oxygen, and nitrogen. Refers to Sun.
The formation of petroleum is caused by chemical and biological changes such as high pressure, high temperature, and lack of oxygen in organic matter, which produce a large number of hydrocarbons, and finally form oil under the action of stratigraphic structure and geological structure. Therefore, oil can be said to be a fossil fuel formed by organic material stored in the ground during geological processes.
In general, petroleum is an organic compound and one of the most important fossil fuels. Oil is one of the most important energy consumers in the world, which not only provides the energy needed for human survival, but also drives the development of many industries and economies. At the same time, the extraction, transportation and use of oil will also lead to environmental pollution and resource shortages, so we need to manage and use oil more scientifically to promote the sustainable development of energy.
-
Question 1: Is oil an organic matter? Why is it organic.
Oil, also known as **, is a viscous, dark brown liquid. There are oil reserves in parts of the upper crust.
The main ingredient is a mixture of various alkanes, naphthenes, and aromatic hydrocarbons. Carbon-containing compounds are usually called organic compounds, referred to as organic compounds. Oil, natural gas, cotton, dyes, chemical fibers.
Question 2: Coal, oil, and natural gas are not minerals, what are they called? Is it organic Coal, oil, and natural gas belong to fossil fuels and belong to minerals. Coal is a complex mixture of organic and inorganic matter, and both oil and natural gas belong to the mixture of hydrocarbons and belong to organic matter.
Question 3: Is oil organic? Why is it organic.
Oil, also known as **, is a viscous, dark brown liquid. There are oil reserves in parts of the upper crust.
The main ingredient is a mixture of various alkanes, naphthenes, and aromatic hydrocarbons. Compounds containing carbon-containing glycogen are usually called organic compounds, referred to as organic compounds. Oil, natural gas, cotton, dyes, chemical fibers.
Question 4: Is oil an organic matter? Yes, definitely. The substances with C and H elements as the main components are organic substances.
Question 5: Coal, oil, and natural gas are not minerals, what are they called? Is it organic Coal, oil, and natural gas belong to fossil fuels and belong to minerals. Coal is a complex mixture of organic and inorganic matter, and both oil and natural gas belong to the mixture of hydrocarbons and belong to organic matter.
-
Non-hydrocarbon compounds.
Non-hydrocarbon compounds in petroleum refer to a large group of compounds that contain sulfur or nitrogen or oxygen, or metal atoms (mainly vanadium and nickel) in addition to the two main elements C and H. The amount of these elements in petroleum is not much, but there are many compounds containing these elements, sometimes up to 30% of the weight of the residue of the stone cover. Among them, they are mainly compounds containing sulfur, nitrogen and oxygen.
Sulfur-containing compounds.
Sulfur is the third most important element after carbon and hydrogen, and sulfur-containing compounds are also the most common. At present, nearly 100 kinds of sulfur-containing compounds have been identified in petroleum, mostly in the form of mercaptans, thioethers, sulfides (H2S) and thiophenes (sulfur-containing heterocyclic compounds, which are abundant in heavy oil.
Nitrogenous compounds.
Nitrogen-containing compounds in petroleum are rare, and the average content is less than that. At present, there are more than 30 kinds of nitrogen-containing compounds isolated from petroleum, mainly in the form of nitrogen-containing heterocyclic compounds. It can be divided into two groups, one group is basic compounds, including pyridine, quinoline, isoquinoline, acridine and porphyrin, indole, carbazole and their homologues.
Among them, metal porphyrin compounds containing vanadium and nickel are the most important.
The porphyrin compounds in ** were first discovered by Trebs (1934). It includes primary porphyrins and deoxyrosa primary porphyrins, and proposes that porphyrins in petroleum are converted from chlorophyll in plants and heme chloride in animals. This discovery provides strong evidence for the theory of organic genesis of petroleum, and has attracted widespread attention and attention.
At present, the research on porphyrins has been gradually deepened and many types have been discovered. Porphyrins are nitrogenous compounds with four pyrrole nuclei as the basic structure and connected by the Jiachuan Bridge, also known as organ group compounds. In petroleum, porphyrins often form complexes with metal elements such as vanadium and nickel, so they are also called organometallized (complex) complexes, and their basic structure is very similar to the structure of chlorophyll.
However, not all of them contain porphyrins, and a significant number of them do not contain or only trace amounts. Generally, the ** porphyrins formed in the Mesozoic and Cenozoic strata are more, while the Paleozoic strata contain little or no porphyrins. This may be related to the poor stability of porphyrins.
Under high caution (250) or oxidation conditions, porphyrins will undergo ring-opening cleavage and destruction.
In addition, the porphyrin type in ** is also closely related to the sedimentary environment, with marine oil rich in vanadium porphyrins and continental oil rich in nickel porphyrins.
Oxygenated compounds.
More than 50 oxygenates have been identified in petroleum. These include organic acids, phenols, and ketones. Among them, the main organic acids related to acid functional group-COOH are fatty acids of C1-24, naphthenic acid of C5-10, and isoprenyl acid of C10-15.
The organic acids and phenols (acidic) in petroleum are collectively referred to as Shikuanshen oleic acid, of which naphthenic acid is the most, accounting for 95% of petroleum acid, mainly five acids and six acids. Naphthenic acids are found in almost all petroleums, but the content varies greatly between. Naphthenic acid is easy to react with alkali metals to form naphthenate, which is particularly soluble in water.
Therefore, the presence of naphthenates in groundwater is one of the signs of oil searching.
-
It doesn't belong. In a narrow sense, organic compounds are mainly composed of carbon and hydrogen elements, and are compounds with certain carbon content. Whereas a compound is a pure substance composed of atoms of two or more elements (referring to the protocryptotanic subspecies of different elements), but gasoline is a mixture.
Introduction to Organics
Organic matter is the material basis for the production of life, and all living organisms contain organic compounds. Fats, amino acids, proteins, sugars, heme, chlorophyll, enzymes, hormones, etc. The metabolism of organisms and the genetic phenomena of organisms are involved in the transformation of organic compounds.
In addition, many substances that are closely related to human life, such as oil, natural gas, cotton, dyes, chemical fibers, plastics, plexiglass, natural and synthetic drugs, etc., are closely related to organic compounds.
You can draw a carbon chain.
For a cc—c—c—c >>>More
Organic compound) is mainly composed of oxygen, hydrogen, and carbon. Organic matter is the material basis for the production of life. Fats, amino acids, proteins, sugars, heme, chlorophyll, enzymes, hormones, etc. >>>More
Alcohols. Halogenated hydrocarbons can undergo a dissipation reaction. >>>More
1.Familiarize yourself with the nature of functional groups. >>>More
The so-called "salting-out" refers to the addition of inorganic salts such as sodium chloride to the solution of organic macromolecules or some organic polymers. >>>More