汽油的辛烷值是什么意思，为什么高档车要加高标号油？
What does gasoline octane rating mean, and why do performance cars need high octane?
辛烷值表示汽油抗爆震的能力；标号越高越不易在火花前自行点燃。高压缩比发动机若用低标号油会爆震、伤引擎。
Octane rating measures resistance to knock; higher means less likely to self-ignite before the spark. High-compression engines knock and get damaged on low-octane fuel.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
邢其毅 等,《基础有机化学》第4版,北京大学出版社,2016
Xing Qiyi et al., Basic Organic Chemistry, 4th ed., Peking University Press, 2016
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787301272121（豆瓣书目条目: 基础有机化学）
#汽油 #辛烷值 #爆震
天然气和炼油厂的硫磺是怎么回收的？
How is sulfur recovered from natural gas and refineries?
先把含硫物转化为硫化氢，再用克劳斯法把它部分氧化成单质硫，既得到产品又减少二氧化硫污染。
Sulfur compounds are converted to H2S, then the Claus process partially oxidizes it to elemental sulfur—recovering product while cutting SO2 emissions.
难度 专业 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
邢其毅 等,《基础有机化学》第4版,北京大学出版社,2016
Xing Qiyi et al., Basic Organic Chemistry, 4th ed., Peking University Press, 2016
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787301272121（豆瓣书目条目: 基础有机化学）
#硫磺 #克劳斯法 #回收
为什么石油这个名字出自中国古人？
Why does the name petroleum come from an ancient Chinese scholar?
北宋沈括在《梦溪笔谈》中首次使用石油一词，并记录其可燃、可制墨，预言必大行于世，比西方早认识其燃料价值。
Song polymath Shen Kuo first used the term shiyou (petroleum) in Dream Pool Essays, noting it burns and makes ink, predicting its future ubiquity.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：本题原挂出处与答案内容不符，已撤回；具体书目待补，暂不展示来源。
本题原挂出处与答案内容不符，已撤回；具体书目待补。
Previous citation withdrawn as unsupported for this answer; a specific source is pending.
#沈括 #石油 #梦溪笔谈
石油催化裂化（FCC）到底在干什么？
What does catalytic (fluid) cracking actually do in a refinery?
它把重质长链烃在沸石催化剂上“拆短”成汽油和烯烃，是炼油厂提高轻质油品收率、生产化工原料的核心工艺。
It breaks heavy long-chain oils into shorter gasoline-range molecules and olefins over zeolite catalysts—central to boosting light-product yield.
难度 专业 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
邢其毅 等,《基础有机化学》第4版,北京大学出版社,2016
Xing Qiyi et al., Basic Organic Chemistry, 4th ed., Peking University Press, 2016
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787301272121（豆瓣书目条目: 基础有机化学）
#催化裂化 #汽油 #沸石
催化裂化装置改用稀土交换Y型分子筛后,为什么重油转化率上升而汽油辛烷值反而下降?
When FCC units switch to rare-earth-exchanged Y zeolite, why does heavy-oil conversion rise while gasoline octane falls?
三价稀土离子替换部分骨架质子后,分子筛酸性位密度和水热稳定性同时增强,裂化更深,重油转化率明显提高。但稀土离子周围的强静电场加速双分子氢转移反应,把汽油馏分中的烯烃饱和成烷烃,研究法辛烷值因此损失一到两个单位。这种活性与辛烷值的负相关是平衡催化剂配方设计必须权衡的核心矛盾。
Trivalent rare-earth cations replacing some framework protons raise both acid-site density and hydrothermal stability, so the catalyst cracks deeper and heavy-oil conversion climbs. The intense electrostatic fields around those cations also speed bimolecular hydrogen transfer, which saturates gasoline-range olefins into paraffins and costs one to two research-octane numbers. Balancing this activity-versus-octane inverse relationship remains central to equilibrium-catalyst formulation.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-10-04
来源 · Source
Pine L A, Maher P J, Wachter W A. Prediction of cracking catalyst behavior by a zeolite unit cell weight model. J. Catal., 1984, 85: 466-476
Pine L A, Maher P J, Wachter W A. Prediction of cracking catalyst behavior by a zeolite unit cell weight model. Journal of Catalysis, 1984, 85: 466-476
独立核验依据 · Independent verification: 核验依据 1 DOI 10.1016/0021-9517(84)90235-5
#石油化工 #催化裂化
乙烯是怎么从石油里得到的？
How is ethylene obtained from petroleum?
通过蒸汽裂解，把石脑油或乙烷等烃类在800°C左右高温下快速“打断”成小分子，副产丙烯、丁二烯等，是石化工业的龙头装置。
Steam cracking rapidly breaks naphtha or ethane at ~800 °C into smaller molecules, co-producing propylene and butadiene—the cornerstone of petrochemistry.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
邢其毅 等,《基础有机化学》第4版,北京大学出版社,2016
Xing Qiyi et al., Basic Organic Chemistry, 4th ed., Peking University Press, 2016
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787301272121（豆瓣书目条目: 基础有机化学）
#乙烯 #蒸汽裂解 #石化
流化催化裂化(FCC)中,重质油为什么能在分子筛催化剂上裂解为汽油组分?
In fluid catalytic cracking (FCC), why can heavy oils be cracked into gasoline-range components over zeolite catalysts?
FCC采用Y型分子筛等固体酸催化剂,其骨架铝产生的Bronssted酸位在约500摄氏度下将重质油中的大分子烷烃和芳烃侧链质子化,经碳正离子机理发生β-断裂,C-C键逐级切断生成C3-C12的较小烃类。分子筛的规整孔道还起到择形作用,限制过度缩合的焦炭前体扩散。裂化吸热由再生器中焦炭燃烧放热补偿,两器循环维持热量平衡,最终得到高辛烷值汽油、液化气和柴油。
FCC uses solid acid catalysts such as Y zeolites whose framework aluminum generates Bronsted acid sites; at roughly 500 degrees C these sites protonate large paraffins and aromatic side chains in the feed, and beta-scission along the carbenium-ion pathway cleaves C-C bonds stepwise into C3-C12 hydrocarbons. The ordered zeolite pores also exert shape selectivity that limits diffusion of over-condensed coke precursors. The endothermic cracking heat is balanced by coke combustion in the regenerator, the two-vessel circulation maintains thermal balance, and the process yields high-octane gasoline, LPG, and diesel fractions.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-11-03
来源 · Source
Sadeghbeigi R. Fluid Catalytic Cracking Handbook. 3rd ed. Waltham: Elsevier, 2012: 45-78.
Sadeghbeigi, Fluid Catalytic Cracking Handbook, 3rd ed., Elsevier, 2012, pp. 45-78.
独立核验依据 · Independent verification: 核验依据 1 OPENLIBRARY 标识 /works/OL16701482W：Fluid catalytic cracki
#流化催化裂化 #分子筛酸性位
为什么乙烯是世界上产量最大的有机化工原料？
Why is ethylene the highest-volume organic chemical made?
乙烯是制造塑料、合成橡胶、纤维和溶剂的起点，几乎所有现代石化产品都从它出发，所以产量最大。
Ethylene is the starting point for plastics, rubbers, fibers and solvents; nearly all petrochemical products trace back to it, so it leads in volume.
难度 入门 · 适合 小学低段(6-8)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
邢其毅 等,《基础有机化学》第4版,北京大学出版社,2016
Xing Qiyi et al., Basic Organic Chemistry, 4th ed., Peking University Press, 2016
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787301272121（豆瓣书目条目: 基础有机化学）
#乙烯 #有机原料 #塑料