# US 2016/0355451 A1 · Removal of aromatic impurities from an alkene stream using an acid catalyst, such as an acidic ionic liquid > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2016/0355451 A1 - Document ID: US20160355451A1 - Status: Published application - Kind: A1 - Application number: 15/116,908 - Filed: 2015-02-05 - Published: 2016-12-08 - Earliest claimed: 2014-02-07 - Assignees: Saudi Basic Industries Corporation - Applicants: Saudi Basic Industries Corporation - Inventors: Roland Schmidt; Shahid Azam - Web page: https://patentgrep.com/patent/US20160355451A1 ## CPC - C07C 7/14875: {with organic compounds (organo-metallic compounds C07C7/173)} - C07C 2/68: with halides - C10G 17/02: with acids or acid-containing liquids, e.g. acid sludge - C10G 17/09: with acid salts - C10G 29/205: {by reaction with hydrocarbons added to the hydrocarbon oil} - C10G 50/00: Production of liquid hydrocarbon mixtures from lower carbon number hydrocarbons, e.g. by oligomerisation - C07C 2527/125: Compounds comprising a halogen and scandium, yttrium, aluminium, gallium, indium or thallium - C10G 2300/1088: Olefins - C10G 2300/201: Impurities - C07C: ACYCLIC OR CARBOCYCLIC COMPOUNDS - C10G: CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION (cracking to hydrogen or synthesis gas C01B; cracking or pyrolysis of hydrocarbon gases to individual hydrocarbons or mixtures thereof of definite or specified constitution C07C; cracking to cokes C10B); RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES ## Abstract A process for the preparation of a chemical composition comprising an aromatic compound α in a concentration B by weight, based on the total weight of the chemical composition, includes: a. providing the following reaction components: i. a chemical composition comprising the following: a) The aromatic compound α in a concentration A by weight based on the total weight of the chemical composition, and b) An olefin in an amount of about 50 to about 99.99 wt. %, based on the total weight of the chemical composition, and ii. an acid; and b. reacting the components to obtain the chemical composition comprising the aromatic compound α in a concentration B by weight based on the total weight of the chemical composition; wherein the concentration B is less than the concentration A. ## Claims ### Claim 1 A process for the preparation of a chemical composition comprising an aromatic compound α in a concentration B by weight, based on the total weight of the chemical composition, comprising: a. providing the following reaction components: i. a chemical composition comprising the following: a) The aromatic compound α in a concentration A by weight based on the total weight of the chemical composition, and b) An olefin in an amount in an amount of about 50 to about 99.99 wt. %, based on the total weight of the chemical composition, and ii. An acid selected from an acidic ionic liquid, a protic compound, an ammonium, an imidazolium, an anion selected from AlCl4−, AlBr4−, AlI4−, BF4−, PF6−, CF3SO3−, [(CF3SO2)2N]−, toslyate, or a combination comprising at least one of the foregoing, or a combination comprising at least one of the foregoing; and b. reacting the components to obtain the chemical composition comprising the aromatic compound α in a concentration B by weight based on the total weight of the chemical composition; wherein the concentration B is less than the concentration A. ### Claim 2 (depends on 1) The process according to claim 1, wherein the olefin b) is an α-olefin, comprising a C2-C20 olefin. ### Claim 3 (canceled) ### Claim 4 (depends on 1) The process according to claim 1, wherein the concentration A is about 2 ppm to about 10 wt. % based on the total weight of the chemical composition i. ### Claim 5 (depends on 1) The process according to claim 1, wherein the ratio of concentration A: concentration B is about 1:0 to about 1:0.1. ### Claim 6 (depends on 1) The process according to claim 1, wherein the aromatic compound is benzene. ### Claim 7 (depends on 1) The process according to claim 1, wherein a further olefin is present as a component of a), wherein the further olefin is different to the olefin b). ### Claim 8 (depends on 7) The process according to claim 7, wherein the further olefin is a C2-C20 olefin. ### Claim 9 (depends on 1) The process according to claim 1, wherein the acid comprises an acidic ionic liquid or wherein the acid comprises a protic compound. ### Claim 10 (canceled) ### Claim 11 (depends on 1) The process according to claim 1, wherein the acid comprises an ammonium. ### Claim 12 (depends on 11) The process according to claim 11, wherein the ammonium has the general formula NR4, wherein R is hydrocarbon or hydrogen, and wherein each R can be the same as or different to the other R in the molecule. ### Claim 13 (canceled) ### Claim 14 (depends on 1) The process according to claim 1, wherein the acid comprises an imidazolium. ### Claim 15 (depends on 14) The process according to claim 14, wherein the imidazolium has the general formula wherein R2 is alkyl; wherein each of R1, R3, R4 is hydrocarbon or hydrogen; and wherein R1, R2, R3, R4 within a molecule can be the same as or different to each other. ### Claim 16 (canceled) ### Claim 17 (depends on 15) The process according to claim 15, wherein R2 is butyl and R1, R2 and R3 have one of the following configurations: a. R1, R3 and R4 are hydrogen; b. R1 and R3 are hydrogen and R4 is alkyl; c. R1 and R4 are hydrogen and R3 is alkyl; and d. R4 and R3 are hydrogen and R1 is alkyl. ### Claim 18 (depends on 1) The process according to claim 1, wherein the acid comprises an anion selected from AlCl4−, AlBr4−, AlI4−, BF4−, PF6−, CF3SO3−, [(CF3SO2)2N]−, tosylate, or a combination comprising at least one of the foregoing. ### Claim 19 (depends on 1) The process according to claim 1, wherein the acid is present in step b. in a concentration of about 0.1 to about 50 wt. %, based on the total weight of the reaction components. ### Claim 20 (canceled) ### Claim 21 (depends on 1) The process according to claim 1, wherein the chemical composition i. is a homogeneous liquid. ### Claim 22 (depends on 1) The process according to claim 1, wherein the reaction b. is carried out at a temperature of about 0 to about 250° C. ### Claim 23 (depends on 1) A process for the preparation of a downstream product comprising: i. preparation of an alkene by a process according to claim 1; and ii. reaction of the alkene to form the downstream product. ### Claim 24 (depends on 23) The process according to claim 23, wherein the downstream product is a polymer. ### Claim 25 (depends on 23) The process according to claim 23, wherein the downstream product is a polythene or a polypropene. ### Claim 26 (canceled)