A process for producing an ethylbenzene product having a purity of at least 99.50 percent based on the weight of ethylbenzene present in the product from a reformate having: (i) C 5 - hydrocarbons; (ii) benzene; (iii) C 7 + aromatic hydrocarbons; and (iv) from 1 to 75 percent by weight of at least one C 6 + non-aromatic hydrocarbon having a boiling point within 10°C at a pressure of 101.3 kPa-a of the boiling point of benzene, the process comprising: (a) removing C 4 - hydrocarbons and the C 7 + aromatic hydrocarbons from said reformate by distillation to form a hydrocarbon composition containing benzene and from 1 to 75% by weight of said at least one C 6 + non-aromatic hydrocarbon and comprising less than 0.05 percent by weight of C 4 - hydrocarbons and C 7 + aromatic hydrocarbons based on the weight of the hydrocarbon composition; (b) alkylating the benzene present in the hydrocarbon composition of step (a), without extraction of said reformate, with ethylene in at least partial liquid phase in an alkylation reaction zone with an acid active catalyst comprising at least one of a zeolite beta molecular sieve and a crystalline MCM-22 family material selected from MCM-22, PSH-3, ERB-1, ITQ-1, ITQ-2, ITQ-30, MCM-36, MCM-49, MCM-56, and UZM-8 to form an ethylbenzene product at conditions that include a temperature in the range of from 162.8°C to 232.2°C, a pressure from 689.5 kPa-a to 6.89 MPa-a sufficient to maintain the benzene in the liquid phase, a mole ratio of ethylene to benzene in the range of from 0.001:1 to 1:1, and a WHSV based on total ethylene over total catalyst for overall reactor in the range of from 0.1 to 10 hr -1; and (c) distilling the product of step (b) in a separation zone to produce an ethylbenzene product having a purity of at least 99.50 percent based on the weight of ethylbenzene present in the ethylbenzene product. (a) removing C 4 - hydrocarbons and the C 7 + aromatic hydrocarbons from said reformate by distillation to form a hydrocarbon composition containing benzene and from 1 to 75% by weight of said at least one C 6 + non-aromatic hydrocarbon and comprising less than 0.05 percent by weight of C 4 - hydrocarbons and C 7 + aromatic hydrocarbons based on the weight of the hydrocarbon composition; (b) alkylating the benzene present in the hydrocarbon composition of step (a), without extraction of said reformate, with ethylene in at least partial liquid phase in an alkylation reaction zone with an acid active catalyst comprising at least one of a zeolite beta molecular sieve and a crystalline MCM-22 family material selected from MCM-22, PSH-3, ERB-1, ITQ-1, ITQ-2, ITQ-30, MCM-36, MCM-49, MCM-56, and UZM-8 to form an ethylbenzene product at conditions that include a temperature in the range of from 162.8°C to 232.2°C, a pressure from 689.5 kPa-a to 6.89 MPa-a sufficient to maintain the benzene in the liquid phase, a mole ratio of ethylene to benzene in the range of from 0.001:1 to 1:1, and a WHSV based on total ethylene over total catalyst for overall reactor in the range of from 0.1 to 10 hr -1; and (c) distilling the product of step (b) in a separation zone to produce an ethylbenzene product having a purity of at least 99.50 percent based on the weight of ethylbenzene present in the ethylbenzene product.